There have been quite a few fighting games the last few years and they seem to be doing well. Even the PC has been getting some fighters lately to, they just got MK and are getting Skullgirls as well.
I guess my comment was more to his proclamation that fighting games are a "frontline" or top selling category. Fighting games will always have a niche market (i will probably buy it), but they aren't really a frontline category IMO. Maybe i am just not following it closely enough.