I am 6ft. tall as well. When I bought my XB12R I was told basically the same thing by a colleague who rode a bussa. All I said in reply was "let me know how I look in the corners, princess".
I was told I look like the death sphere rider at a carnival with such a short wheel base. Then was told his sportster with the screaming eagle package was insanely fast. . .
I had a buddy tell me he didn't realize how small the bike was until I got on it. I'm not a big guy (5'10", 190) so I can't imagine what some of you larger gentlemen look like on your bikes.
6'3" on a 12R. Get the too small comment all the time. Of course, my back sits against the passenger seat cover and my knees barely fit behind the pucks, so maybe it is a little small.