Originally Posted by Excelsior.
If we're gonna use facial hair as a point, we must be fair: the Stark in that panel doesn't have a goatee either. Is RDJ therefore not visually Stark?
That's the classic Stark. For about the last 10 years Tony has had a goatee in the comics. The classic Tony only had a mustache because they were trying to go for that David Niven type look that was popular in the 60's.