It's extremely impressive from a technical standpoint, but not a foremost example of creative drumming IMO, and he could have made the different patterns flow together more smoothly and musically. They feel kinda robotic and disjointed (the sections that starts at 0:15 and the bit at 0:36 have that strange feeling, at least to me). Compare this 1-minute video with Metropolis 4:30-5:35 or 5:46-6:30 and maybe you'll see where I'm coming from. He still adds some cool feel to a very technical section, I would like to see more of that. But I think that whole instrumental section in Outcry feels disjointed, too mechanical and not musical, so that certainly affects my opinion.
Of course, the idea of ME criticizing Mike Mangini's drumming is absurd from every possible point of view
, but hey, this forum doesn't demand people to be musically skilled in order to have the right to criticize