QUOTE (Buttoneer @ Mar 9 2010, 09:55)

DC makes an interesting observation about Buttons move to McLaren. He said that when he moved to Red Bull, McLaren was willing to sell them a steering wheel so DC had a control set he was fully comfortable with. It enables a driver to react instinctively rather than have to think about where the brake bias control (for example) is. Unless Button has been putting serious time into the simulator, he's going to have a hard time getting used to the car itself, and if the drivers are close anyway, this alone might be the edge Hamilton needs.
Faster reactions obviously help. So, if Jenson doesn't know the steering wheel as well as Lewis that will cost him. However, that's not necessarily something you will often see in qualifying or during normal parts of the race. After all, for the main controls he would already be used to them otherwise he wouldn't be able to drive the car. It would be the more rarely used controls where he would have more of a problem... but if such a situation doesn't come up in a race, then it doesn't matter.
For DC's move to RB, we don't know how good RB's simulator was at the time. We don't know how flexible they are mentally - DC wore his "lucky pants" until they became worn out, but JB doesn't seem like that. We also don't know the relative quality and depth of the wheels, though at the time I suspect going from McLaren's steering wheel to RB's felt like a downgrade to DC. Going from Brawn's to McLaren's steering wheel might feel like an upgrade to Jenson... though it's probably more complex too - McLaren almost certainly have more "knobs" to play with in terms of tuning the car, so Jenson might have to get ready to new concepts, not just a new layout. I would say new concepts are a lot harder to learn than a different layout.
However, McLaren have a very good simulator, and in just about every interview with Jenson I remember him talking about having just used the simulator or going back to use the simulator shortly. He may well have driven many many more virtual miles than real ones and I would think McLaren have put him through a specific training programme to "acclimatise".
Certainly I think a lot of commentators go over-board on how McLaren is "Lewis's team" and how he's been there for so long. He's only been with the F1 racing team 3 years though - it's not like they're the same people he'd have worked with from the start. I think Lewis is just that bit faster than Jenson but most commentators don't want to say that too much, so they focus on other things. Well anyway, it will be up to Jenson to make use of what McLaren can do for him - if he just sits back and waits for them to hand things to him on a silver platter, then he's going to lose - like with driving, you need to be aggressive in preparation too, within reason.
edit I should also add that it's also a matter of McLaren getting used to Jenson as well.