The arcade version of AK was basically a beta with some weird rules, like the 256 limit for chains. Scorers broke the game in no time and lost interest pretty quickly. The 360 version added a revised version of the arcade system (much better imho) and an entirely new mode... and bombed again. But to be fair, all latest Cave ports had low sales, so much that DDP Saidaioujou was made only with the help of Microsoft. I feel that AK deserves another chance, but realistically speaking there are other titles that will probably sell more (and AK even had a western release).