well, this is really, really hard decision!
they are both so awesome!
i'm sorry tales, but i would suggest Super Mario Galaxy (one of the best games of all time)
but you should get both if you can!
*about Ps3, i guess sure Call of Duty is better than Tomb Raider
don't mind my username, that was more than 10 years ago, I'm a different person now, amazing how people change ^_^