However, saying the average sized woman can perform the same physical tasks as the average sized man is easily shown to be false using simple physics.
Your failing is that you predicate the idea of equality on utilitarian grounds, that is to say, you believe people should be treated equally, and so you try to justify this by saying they're actually the same in mental and physical tasks. This doesn't work, and it can't be generalised. There are differences, but we should be saying: those differences shouldn't matter to the worth of a person (if we really must go about considering people in the economic sense of having value, which I think is a concept worth repudiating).
The claim you're making seems much more like a strawman, so I'd be inclined to say you're trolling; a strawman very similar to yours was made by Tugan more than 100 years ago, and quickly put down by V.I. Lenin[0]:
>It goes without saying that in this respect men are not equal. No sensible person and no socialist forgets this. But this kind of equality has nothing whatever to do with socialism. If Mr. Tugan is quite unable to think, he is at least able to read; were lie to Lake the well-known work of one of the founders of scientific socialism, Frederick Engels, directed against Dühring, he would find there a special section explaining the absurdity of imagining that economic equality means anything else than the abolition of classes.
[0] https://www.marxists.org/archive/lenin/works/1914/mar/11.htm
You're incredibly sexist. You undoubtedly are part of the reason women are paid 60% what men are. I hope you are fired from wherever you work as you're part of the problem.
All: please don't feed trolls by replying.