Little big planet doesn't appeal to me, it has no direction its very much me playing with myself, making myself have fun, i'm more into stories and action, Resistance 2 is a generic shooter so thats missable.
So far, the only thing the ps3 has for me is MGS4... and even that i feel i can miss, the story seems to have gone ape s*** crazy and i'm not sure i could be bothered with it.
I'm sure sales will increase, it has the ps2 on its side, mothers will buy playstation since their children enjoyed the last one so much, now all my ps2 friends have xbox 360's so there's no real reason to get one in my circle and if this is happening in other circles, surely word of mouth will work against the ps3, i have 1 crazy tekken friend who sold his ps3 when he heard it was coming to the 360.
Your statement about the 360 having no exclusives isn't true, and if it was true would it matter? if you can play the game for cheaper on the 360 would you? and would you have a better experience when it comes to online? probably.
The 360 remains easier to develop for since its basically a pc and i believe this will lean more exclusives to the 360, we've already seen this trend forming and i see no end.
I'm sorry this turned abit fanboy but its going to eventually, the ps3 sales will increase, but it can't make it up now.