That's absolutely a fallacious comparison.
1. We don't have accurate data from China on the number imprisoned and killed by them, so no one can make absolutely comparisons like you did.
2. The Chinese do this to people living peacefully inside their borders. If the US started rounding up and killing ethnic minorities WW2 concentration camp style then you could make this comparison. The US was engaged in active conflict with a group that itself was detrimental to human (specifically, women's) rights and that engaged us first.
I dont agree with a lot of what happened in the middle east, but you can't in good fairh stretch that as a comparison to fit your own narrative.