I've seen the fight between Tina and the Asian girl (Christy) - it's a rather restrained catfight-wrestling match in which the girls start out in dresses, which have been ripped down to their waists by the end. Both girls are easy on the eye but Tina seems to be simply going through the motions, and could have given her opponent a real beating if she had chosen to - so I wouldn't call this match real. If she'd been in the same frame of mind as, say, in her Festelle match with Anita and had been allowed full rein then it would have been carnage, but the requirement clearly was for nothing too violent. The referee mentions at the start that this is an unusual video in that it was filmed in USA whereas their normal base was overseas - hence the participation of Tina and Robin I assume.
I've not seen the Tina-Robin match and, like you, would be interested to hear a description of it. I can't imagine these two would take it easy on each other.