I tend to think that any two of a dozen drivers would be winners if they drove for Mercedes, which quite clearly has the fastest car. HOWEVER....
"We all know how rosberg got to be there, and hamilton is only there because mclaren spent a small fortune bringing him through the ranks, they didnt make a massive effort to keep him."
Irrespective of how they reached the top, Rosberg and Hamilton are both AT the top. If either of them had been second-rate, Mercedes would not have signed them in the first place.
Hamilton has had bad luck time and again this season, and had he not, he would be, I suspect, well ahead in the points. Mercedes would obviously prefer a German driver to win the title in their car, but I don't believe there is any sort of sabotage going on in the Mercedes team, either.
I don't buy the implied theory that Rosberg coldly calculated that if he put his front wing into Hamilton's rear tyre, the odds were that Hamilton would get a puncture and he himself would suffer but little; Schumacher might possibly have been that sharp, and that ruthless, but not Rosberg, imo.
I think he genuinely intended to 'make a point', not cause a collision, and had not quite enough skill to make his point without causing a collision in this particular set of circumstances; he overcooked it a touch, and came unstuck. One hopes he has learnt something from all this, and I suspect he has.