Yeah, they clearly had SSFIV Arcade Edition in the pipeline, so they were probably waiting for that to be completed before milking the PC users. I'm guessing that the vanilla DLC didn't sell well on PC, so they just decided to wait until the "final" version of Super instead of selling Arcade as an add-on, which is what seems like is going to happen on the consoles with Yun/Yang. Sadly, I admit I am enough of a die-hard SF fan to buy this, though not quite enough to buy a compatible console for it.