Well this is, what, 30 years in the future? I hope we're not so hopeless that we're still using regular armor by that time. Rounds would certainly impact, that's for sure, but with the research that the corporation's entire purpose was for, it wouldn't knock the armored soldier down unless he had his feet planted north/south, and the round hit the chest from the east/west. Properly braced, with the suit 'powered' up [because it obviously wouldn't just be an armor plate, with electronics and stuff right underneath], no, then it certainly would not knock the person down.

And I never said it was more powerful than a tank. When I say small-arms, I mean generic rounds, not armor piercing. I didn't say it was a tank all on its own.