Weirdly enough, I hate American Son's armor less than Iron Patriot's.
Really, it's hard to distribute Red, White, and Blue on a costume well. White tends to draw the eye considerably. This design, when he's standing straight, goes SEE MY CROTCH AND ABS. Maybe if it was more of a metal color and less white, it'd look better.
The surreal roundedness of the fake muscles just destroys my eyes. I keep seeing it as a guy with metal glued to him and stupidly colored metallic tights.
...However, WTF is with the random orange bit on Harry's helmet? The stripes on his feet? The matte eagle kinda works... and the placement of the white isn't so horrific as it is in some drawings of Iron Patriot. I will say one good thing about the random orange: it puts a focus on the face. Which... well, is not a bad thing.