I don't think I'm anything other than average in length, but it's quite wide and it's been a tight squeeze into some Chinese vaginas, I can tell you.
I'm the other way round - I've got lots of length but not much girth (rather like my overall bodily shape, come to think of it!). When I was married it was always a doddle to slide in and start humping, but I'd frequently 'stab' the wife too deeply which did cause her some brief pain.
Since then, no real problems - my only issue is with condoms. If I roll them as far down as you should, the end of the bag is really tight and constrictive on my tip which effects sensitivity.