Its obvious that this game is for a younger crowed. Why? Because its very easy, it has a friendly look, and it reminds you of the Pokemon Anime series.
Mega Man and Zero of course return in this game, and this time they have a large amount of dialogue. But its kind of annoying, because the voice acting is very cheap, and repetitive. I know this is a minor complaint. But after hearing Mega Man say the same 3 word phrase every time I do an attack, can get VERY annoying. You'll find yourself putting the game on mute.
Graphics are not to bad. Its Cell Shaded and it looks like a cartoon. These are no Windwaker graphics, but they pass. My complaint is character movement is VERY limited. They seem more like Lego character models more then anything else. It feels almost as if I am playing a PSone game.
Story is not that great, its not bad. But I can't say it passes for something unique or to keep you playing. Again, this game is aimed toward a younger crowed.
Younger gamers will enjoy this entry of Mega Man, because it reminds them of they're Anime tv shows. The characters all of repetitive sayings they love to blurt out....several times. And have attacks that look "cool".
As for the older crowed and/or Hard Core gamers, if you play Final Fantasy, or even Baiten Kaitos. Stay away from this one. Its boring, it looks, and feels cheap. It disopoints me because I expected better from Capcom.