It's biggest failure was that we never got a pair up between Fluttershy and the Dinobots
||Also Ithey wshould hantve done a team up between Rainbow Dash and Sideswipe, but that's just me||
I still think the second part had a lot more substance to it, with a lot more team ups and characters that made things more interesting(team ups with the Decepticons, more characters from different continuities, especially Knockout being involved)