Well, I dunno. That horse game was poorly-ass designed, especially for something with a learning curve like this. I mean, seriously, they have to have the announcer say the EXACT same line EVERY time he screws up? Yeah, for a 2010 game, having THAT few lines and responses to certain situations is pathetic. This is why Valve has a massive archive of character lines in it's games so the characters don't become repetitive. It's like that one game the AVGN played...
"Where did YOU learn to fly?"
*smack!*
"Where did YOU learn to fly?"
*smack!*
"Where did YOU learn to fly?"
*smack!*
~~~~~~
Aside from that, I think the problem was either the second guy's body-type being an issue for Kinect, or they weren't properly taught how to play. The game itself seemed to be surprisingly responsive. I'd like to see how it handles in another game.
As to motion control itself, whatever becomes of Kinect and Move, the gaming industry is better for the Wii introducing the concept to the world, because they single-handedly broke the graphics arms-race and sent game-designers scrambling for new footing. It can only be a good thing that the priorities have shifted from how good the game LOOKS to how it can be interestingly and effectively played.
I won't lie, Move looks like a Wiimote knockoff as sure as OJ was guilty, and Kinect is such an ambitious venture that I wouldn't be surprised if it's not all that great, and gaming is in for a dry spell if either fail miserably. But the fact that they were both willing to take the risk is a good sign. The idea of Microsoft of all people taking such an ambitious step forward is a good sign for the advancement and elevation of gaming. It might fail, but you should never quit just because you "might fail". Microsoft and Sony, regardless, will have an interesting learning experience, and be all the better in the next generation of consoles.
The Wii is going to remain king of it's castle here. We all know it. The PS3 and 360 are expensive enough without buying these giant addons for very specific games, and the "kidifying" either are doing to me-too the concept of the "Mii" is likely going to be full-blown rejected by the "hardcore" players of both systems. And the people who WANT the party games and motion control will probably just get (or already have) a Wii. But we all know the Wii's comptition can't throw up it's hands and ignore the issue any longer, and rightly so.