That's the impression I'm getting from the screens. It seems a bit more complex, but not by much. I like Zoo Keeper, but chaning the faces from real animals to pokemon doesn't get me too excited.
Mechanism seems a bit like Meteos, in that you can slide each pokemon to a new spot, rather than switching two (like Zoo Keeper). There seems to be all 380~ Pokemon in this game too. You gotta catch 'em all, of course!