I think the OP (who I don't think is a troll fwiw) is getting a bit of an unfair kicking here. I don't think she has articulated it especially well but I suspect that the nub of her thinking is that, if men's and women's sport were truly integrated then over time the gap would narrow. This could in part be a result of exchange of know how between men's and women's sport. But I think that, if you were to make sports unisex, in most disciplines, talented women would find a way of competing.
First, I think it's possible to overstate the physical differences. The women's 100m sprint record is only 109% of the men's. The gap is closer in endurance events.
Second, and particularly in some team sports, there are plenty of top players who key attributes are not physical, but are mental, technical and/or tactical. Just taking the recent history of the England football team for example, off the top of my head, all of Teddy Sheringham, Paul Gascoigne, Glenn Hoddle, Nigel Clough and Peter Beardsley all had fantastic careers without being any sort of natural athlete. You could even put Beckham in this category, who wasn't quick or strong (his main phyiscal attribute - which people tend not to recognise because it's not sexy - was that he could run all day, but a woman could emulate that.
Also look at cricket. There's also no physical reason why a woman couldn't be a world-class opening batsman, spin bowler or wicketkeeper. Maybe in mixed cricket women could carve these out as their niches - with the big hitting middle order batting, and fast bowling, positions being more male-dominated.
Now if I'm honest, intuitively I'm not sure I buy into the above, but I hope the above persuades one or two people that the OP's position is not as daft as everyone's making out.