That's what I noticed too, it has a weird orange peel texture. I would expect an Iron Man armor to be smooth as glass. I mean I guess it does technically look like "iron". Unfortunately it looks like it just came from getting hammered on an anvil.
I have to say I'm disappointed how IP turned out and was very tempted to pick it up because the pose and sculpt look great. The IP armor is one of my favorite designs and it's the colors that make it stand apart from the rest. I'm glad I got the HT IP when I did.