Because very few go to AI to play DDR. Which makes sense - AI would have to be one of the worst places to play DDR at. People here go to AI to play awesome shit like DM/GF/Pop'n/IIDX, and maybe just happen to play DDR on the side.
AI is a good place to play GF/DM/Pop'n/DDR,
Last weekend I went there in Friday afternoon, played some of those arcade,
the Cymbal of DMV has some problem, GFV is ok for me
I saw a 10 footer play DDR Supernova, and he said the up step of 2P side had a little problem.
The Pop'n was really nice!
The only problem for me is.....AI is too far to go(for carless ppl ).