Australian Grand Prix 2012: Lewis Hamilton is a better driver with Jenson Button as team-mate, says Ross Brown And that is a very strong combination - Jenson is a very intelligent guy. Don't get me wrong, very, very quick, but really focused on his racing and that is good for Lewis. Red Bull chief Christian Horner has already named Button as world champion Sebastian Vettel's main rival his season. Hamilton, who appeared distracted by personal problems, finished below his team-mate last season. Jenson sets his car up well, is totally focused during practice and has the right priorities and that's a big help. I think Lewis can learn a lot from how Jenson works," Brawn said. Certainly, Lewis has to do his own thing and it'll be fascinating to see how he does this year, I think he'll do a great job. However, asked about the prospects for seven-time world champion Michael Schumacher, 43, and Nico Rosberg, 26, Brawn is less enthusiastic. I believe we have moved quite a long way in 12 months and we are much stronger than we were 12 months ago. I wasn't comfortable at all with where we were," he said. We hadn't achieved the things we wanted to achieve over the winter, we had a car that had some problems, but we are in a much better position this year. We won't know until the first four races really where everybody sits. Melbourne can be a bit unusual, especially now it is an evening race and tyre pressures and temperatures can be a little bit of an issue. However, he insists that Mercedes-Benz understand that it takes time for investment to pay off in F1. "They understand what's needed, you can't flick a switch overnight," he said. You have to build things in the same way that you do in the automotive industry. You can't create a car as important as a Mercedes overnight. You have to build it bit by bit.