Mega Man 9 is, well, Mega Man. That's the whole point, isn't it? It's the gaming equivalent of mac and cheese, a warm and familiar serving of something you know, love and know you love. Or hate, in which case you shouldn't even bother.
While 1UP won't delve into the alarming psychological instability of a mac and cheese hater, it's safe to say that this trip down memory lane won't transform you into a fan of the blue bomber. In fact, this particular lane's innumerable traps, deadly spikes, disappearing platforms and mean-spirited robot elephants would almost certainly encourage a detour.