It won't work so long as men and women have different PT standards.
For example, a 21 year old man needs to be able to do 42 pushups to graduate from AIT in the Army. A woman, only needs to complete 19.
This is fine and all if you want them in support roles, but if they are put into combat roles where physical strength matters, they'll need to pass the same standards. The guy that surprised you and pinned you down wielding a knife doesn't care that you passed your pt test with 19 pushups.
Or, if your buddy gets shot who weighs 220lbs... and if you only are able to squeeze out 13 pushups, then you're not hauling his ass anywhere.
Or if you are ambushed and your humvee is hit by an RPG and you need to haul ass, the guy wielding the AK47 who is chasing after you doesn't care that you passed your PT run in 19 minutes vs all the guys around you who had to do it in under 16.
If they want equality, make it so, all the way. Otherwise, people will lose even more lives.
Edit: There's plenty of gender specific tortures, for both sides.