I just saw a video of Ronnie over in Korea back in 03 I think, he was fairly lean and they measured his arm at 21.6 inches. I think that shows that Anthony is exaggerating. His arms were never bigger than Ronnie's.
I saw that video and you are mistaken, they measured bigger then 21.6, I forget at the moment but I know it was bigger then that and in another video Coleman measured 58.5 cm which is way more then 21.6 but either way Melvin`s don`t come close