The truth is that "backwards compatability" is non-existing. Can't put a remastered game into a ps2 that is for sure.
I don't mind remastering games tho as long as Sony stick to just a few of the good ones. I remember how happy i was when they re-released pc Monkey Island games in a remastered CHEAP edition. I did see the God of war collection and the price made me angry. I already own those game and put down good money for those already once. I realise its a "collection" of games but that is just a excuse. A REAL collection of games you can only get on pc and it includes a good dozen games at least.
I own a LOT of original ps2 (and ps1 too) games. If i stack em they reach the roof (actually you shouldnt stack em that high as the cases cant handle that, i tried). Anyways, id be really unhappy if Sony & co starts mass re-releasing ALL their games remastered for ps3 at full price. These arnt new game, so treat them like so and sell them at according budget prices at least.