not that I know of..
forum posts and gallery image comments.. are in separate fields..
I do not think that image comments in vbulletin.. increase user postcount either..
I personnaly am against it.. because of
SEO.. a forum post usually is content.. someone explaining something.. someone requiring help.. that is "food" for search engines.. but a picture comment??? 99% are "Hey dude.. nice pic!" or roooooofl etc... nothing i want to be indexed..
Luc
PS.. but i have only seen in forum profile the counts.. i think..