Do you mean better than every other driver in the field or what their strongest at out of their skills? Sorry, my brains not working well at the moment! Either way…
Button’s switch-to-slicks tactic is his one real trick.
Hamilton’s qualifying speed probably.
Massa and Petrov tend to get good starts. Massa’s strength used to be qualifying and/or being able to put in perfect stints as Rob Smedley said in an interview about Monaco 09 but that seems to have gone or perhaps Alonso makes it look like that.
I have no idea with Alonso because he is an all rounder in my mind. I’d say his ability to direct a team perhaps but he’s the hardest to pick.
Trulli used to be the quali master and if he hadn’t lost that I’d say he could be quicker over one lap than anyone out there so I find ti a real shame to see him struggling in Lotus.
Alonso, I would say he’s Schumacher-like sometimes.. I guess you would call that all-rounder or whatever.. but he does seem to have that magic of winning races no one else would do and consistently outperforming his machine. And car/team development skills also. He’s still lacking one fundamental Schumacheresque characteristic, though: the hability of producing fast lap times (or fast enough) in crucial moments of a race, “to push his car to the very limit for sustained periods” to quote wikipedia. At least I don’t remember him doing that very often.
Vettel, if anyone from the present time was to be compared to Senna, it would be him, for sure, the master qualifier and the master-in-winning-races-from-pole.
Button, true that he’s very good in changeable conditions, but definitely not a Regenmeister or Rei da Chuva like Schumi and Senna were of their time.
Hamilton, his carnage-potential whenever they change an engine/gearbox, ;)
Heidfeld, a master tactictian able to snatch podiums with not-so-worthy machines, a bit MartinBrundle-like (also because that expected maiden win never arrived)
Rosberg must be his already mentioned here androgynous qualities
Massa, his likability; it seems that guy that is impossible to not like him for his character
Koby, obviously his overtaking skills, but also his defensive fairness which is unique amongst his peers (meaning he can’t be accused of blocking too hard with a straight face)
Kimi Raikkonen – speed during races. He equalled two times Schumacher’s 2004 record for fastest laps in a season, 10 (2005 & 2008) and Ascari’s 1952 record of consecutive fastest laps in a season, 6 (2008).