Yeah, the guys making these claims that men who work out but have no martial art experience must not do sport at all, let alone mma. Try taking up a sport that you've never tried against a strong female competitor - doesn't have to be world level, just someone local, good and in shape. If you've never held a tennis racket/done a breaststroke/laced up a football boot you aren't going to beat a girl even if you are stronger - why should it be different in mma.
I'm in great shape and a few years ago I played tennis against a girl who had once been a club champion - whatever the hell that means. I had played maybe a handful of times and was and am a complete amateur. However, I was much bigger, stronger and faster and in better shape. Didn't matter, I was obliterated.