1) The same can be said with TT and he has a much smaller frame.....if Vegas had odds on who's most likely to get hurt, I'd say TT would be a better bet than Newton....
2) We have no idea regarding the level of commitment that Newton has....pure speculation.
Newton is a better passer, has better vision ( due to his size ) and has proven he can win big games...If the Panthers offered us Newton straight up for TT, the Bills would jump on that in a second...he is still young...no idea how you can say he's declining...he was in the SB the year before last....
As far as Rivers, I would take him over TT as well without hesitations...he probably has 2-3 years left and he's a better and more complete QB overall........As I said, I like TT because he's our best option right now...but both Newton and Rivers would give us a better chance for the next 2-3 years...IMO of course......