It lacked.
The leeroy video was a staged, comical wipe-setup. It was well-done, rehersed, practiced, and filmed. Not only that, but it was actually really f-ing funny.
This, was pathetic, mediocrely animated, slow-paced, and reduced parody. There was no suspense, you couldn't tell what was going on, unless you watched the original, and even then, you had a difficult time, and Leeroy should pwn you for making him a pink furry piece of shit.
That being said, c'mon man, leave the classics alone, or do em right.