This is fucking stupid.
Let me make this clear. You argue that women should not be allowed in the infantry because there's no way they could meet your desired weight-lifting standards. Okay--whatever. I know nothing about the infantry. I know nothing about weight-lifting.
What I do have a problem with is that you're making this about women. Make it about your insane standards. I don't give a crap where you put that line, because again, I know nothing about it. What I have a problem with is your apparent decision that these standards specifically outlaw women, rather than that they outlaw a lot of people and women might happen to be a good large part of that group. As I said, I do somewhat agree with Nikov's argument, or at the very least I'm not sure about it. But if you decide it's about entrance exams, decide it's about entrance exams, for better or for worse, whether women end up fighting or not.
The question you need to ask yourself is this:
If a women could meet those standards--a theoretical woman, perhaps naturally gifted, perhaps not, who even gives a crap anymore--would you let her in? Forget logistics. Forget all of that. Just ask yourself, honestly, whether this is about weight-lifting or if it is about women. It seems that you are arguing to exclude women more than you are arguing for higher standards in general, simply because they are marked as women.
And, as we all know, language is arbitrary... so address what's there, rather than what is usually there (or what you want to be there), and stop making assumptions that are going to kick you in the face.