Insomniac Games is Cross Platform?

Just found out that Insomniac games, creators behind Ratchet & Clank and Resistance series', has joined EA games and will make their upcoming titles for both Ps3 and Xbox 360, however, they are still keeping Ratchet and Resistance exclusive to Ps3. I have mixed emotions for this action, I think it's good for Sony because those 2 series' exclusive to Ps3 will branch off as EA titles letting Sony actually have some exclusive EA games, it also doesn't matter that much because those 2 series' are the only games Insomniac makes now-a-days. However, of course the bad reason is that any other games (besides R&C and R) will be multi-plat. Oh well, no skin off Sony's nose, Spyro was never a good series anyway. Lets just hope Incognito doesn't follow the same trend. - Josh