With all due respect, I disagree. The team will give the drivers equal cars and resources.
I don't believe in pressure or politics.
Part of being the most complete driver in F1 (which MSc was), is the driver's ability to manipulate your team to working for your cause (and not your team-mate). MSc, Prost, Senna, Fangio, etc, were all masters of this. [Though Prost came unstuck when Senna was McLaren's new golden child...Prost's response was to leave the team in disgust].
I can give you numerous examples if you wish, of the eventual WDC being given preferential treatment, over his team-mate.
Politics are a VERY important part of F1 drivers abilities. A fab example of this is Alonso. Upto 2007 - he was terrible at the political game. The result: he had to leave McLaren (who at the time had one of, if not the best, car on the grid). He just didn't know how to play the game. Had he been more astute, he would've won the 2007 WDC. He learnt from this though and when he joined Ferrari, he rounded up his entire team behind him. The proof: in 2010 Ferrari publicly showed that they were giving Alonso preferential treatment after ordering Massa (illegally) to move over.
Make no mistake, MSc is even better than Alonso at playing the political game. I would fully expect him to arrange it so that that he does get preferential treatment over his team-mate, just as he did in every single F1 team he has ever won a title with, providing Merc build a title winning car.
Oh and before you say that Merc are different to Ferrari - Brawn was one of the main guys at Bennetton and at Ferrari - both teams where MSc was given preferential treatment...so Brawn is absolutely the sort of team boss who would treat 2 drivers unequally.