Doesnt look too bad. Not huge of course, but a nice beach-body for picking up girls.
I'm 6'3 as well, so i know it's kinda hard to fill in the frame. But his legs dont seem that bad to me... (just look at Arvilla's, who is quite tall himself and has trained his legs hard for years and years.)
What's your age?
Nothing to really brag about either, of put others down. But overall, not bad.