I'm curious if anyone else has had an issue with this feat. I can easily win the top tier of GC ships, but I don't seem to be getting credit for 15 critical hits. I've even slowed down the speed so I can carefully count the big yellow number flashes and I'm quite confident I've gotten 15 or more at least 3 times.
My best idea is that it doesn't count critical assists, only crits on a toon's own turn. Any ideas?