Pre-season Formula 1 testing is an impossible language to translate. Trying to figure out which team is genuinely quick is about as tricky as it must have been for intellectuals of bygone years to ascertain the meaning of Egyptian hieroglyphs before the discovery of the Rosetta stone.

You see, there is no solid reference. It changes each lap. Everyone runs new cars with new aerodynamic configurations beyond a daily basis, an hourly basis … or even with each run. Such is the manner in which testing is conducted and such is the exact science of data collection, that wing levels and car set-up are often changed on a lap by lap basis. Fuel levels are kept secret. A new generation of tires are reacting in unusual ways to the different track surfaces at the various testing venues in Spain, their characteristics being further altered by a single degree drop in temperature.

So what can we learn from the timing screens at the end of the day? Not a lot.

But we can learn something from being on site, and that is why NBC Sports’ visit to Barcelona last week was so useful. Because, at this time of year, there are only really two ways to learn who might turn up in Melbourne with a winning car. The first is to watch the cars out on track. Don’t look at the times, look at the way the car drives the circuit, attacks the corners … listen to how the drivers apply the throttle on corner exit, listen to the engine pitch and hear how well planted a driver can keep his right foot in the fast stuff. You will learn pretty quickly who has a responsive car, who has a dependable car and who has a fast car.

The second is to watch the drivers themselves, watch their body language, the way they relate their findings to their engineers. Watch the way they walk around the paddock, read their actions from the way they greet an old friend to the way they drink their tea. And if you can, talk to them.

Last week, as part of NBC’s “staggering” (in the words of paddock colleagues) pre-season filming shoot in Spain, I got to do just that. One on one. And the results were fascinating.

I’m not going to give away all that was said, that would sort of ruin the whole point of sending out all the Hollywood cameras and crew and I don’t think my new NBC bosses would be terribly impressed with that.

The one thing that was clear was that this season is going to be tight. Nobody was giving much away, but the theme seemed to be that with minimal changes to the regulations, almost everyone thinks they have a better car underneath them than they did at this point 12 months ago.

This is even true at McLaren. Jenson Button admitted the team was feeling somewhat confused by its new challenger, and that they were behind the curve compared to their rivals, but that the potential of his 2013 car was far greater than his 2012 ride.

Ferrari have a night and day difference from last season. The car isn’t a dog, and that has given both Felipe Massa and Fernando Alonso the boost they needed after the wretched pre-season testing they endured in 2012. If Alonso could fight for the title with an awful car, imagine what he can do with a half decent one.

Red Bull’s boys were giving little away, too, but Mark Webber has an assured confidence about him. It’s going to take something massive to get one up on his now three-time world champion teammate, but he’s clearly viewed as the best choice to partner the man who is rewriting the record books.

Mercedes has much to prove with its new superstar driver Lewis Hamilton. The 2008 world champion is playing down expectations, as much to manage his own hunger for champagne as that of his fans and new bosses. There is an underlying confidence about him and Nico Rosberg. I don’t think it is a championship confidence for 2013, but perhaps the feeling that they are embarking on something special together for the long term.

The one team that really seems pumped up right now is Lotus. Both drivers were totally at ease, confident and jovial. There wasn’t a hint of pressure, nor of frustration… not even when we sat Kimi Raikkonen down for a 15-minute interview. He even cracked a smile and a few jokes. Right now, the read I get off the Lotus boys is by far the most positive of all the top challengers.

There’s an air of confidence around the Williams and Sauber teams too, and if the assured calm of their drivers is replicated with the speed of their cars, they could be ones to watch.

At the back end of the grid, I’m sorry to say that Caterham’s boys, while excited about the challenge, could not hide a tremendous challenge ahead. Marussia meanwhile may actually start the season with a slight advantage over its next-door neighbors  I was worried to see Luiz Razia not given any test mileage in Barcelona, and one can only imagine that sponsor issues would have been behind a reason to keep a rookie away from much needed cockpit time. He was my stand-out driver in last season’s F1 feeder category GP2, and I hope for his sake that things are resolved in a positive fashion. His teammate Max Chilton, meanwhile, gave some of the most mature and introspective answers I heard all week in interview. I’ve known Max a while, but my word he’s grown up fast over the last few months.

But if one interview stood out for me from the week, it was the one with a driver who may not even have a race seat in 2013. Adrian Sutil stepped into an F1 car for the first time in over a year on the third day of the test and impressed everyone. Force India has a spare race seat this season, and their former driver is favorite to land it. A year out of the sport has not dulled his hunger nor his senses, but from speaking to him I learned that it has given him that rarest of gifts: perspective. He is relaxed, rested, and has come to appreciate that there is more to life than racing. He sees the wider picture, he sees the world and all it has to offer. But still he wants to race.

I’d like to see Adrian back in a race seat. With his raw pace, combined with a new maturity and worldliness, he could be a hugely potent force in 2013.

But these are just my impressions. How good were the boys’ poker faces? We have just over two weeks left until the flag drops. I can’t wait.

Will Buxton is the F1 pit reporter for NBC Sports. Follow him on Twitter @WillBuxton.