Haven't seen Chris Pratt in anything, so can't comment on him. Jennifer Lawrence is just okay (though she did do decent in DoFP, so hopefully she keeps improving with each X-Men film). So, meh. If the film is something I'd be interested in, I'd go see it regardless if these two are in it or not.
I have some interest in the game after seeing a gameplay video for it a while ago, but I don't plan on getting it when it comes out. I'm gonna wait to hear a few things about it then wait on getting it until the price drops.