Just got the Platinum and am not really sure what to give it. I find this to be a very easy game and the only troublesome parts are the grinding trophies especially the coins as they pop up randomly making them luck based.
That said I was planning to level up all characters to max. anyways now with my 6th on 42 the last coin finally popped up. So if you're planning to play longer without caring about trophies the grinding isn't tough, though still a bit troublesome as you begin to wonder at some point if you'll ever get it.
That is about the only reason why I'd give a little higher rating. Without that it's a clear 2 for me. Will give it a little consideration before I click on either 3 or 4.