I'm 6'-2" with a 34" inseam and riding a borrowed 57 cm steel frame. Friends telling me to look for a 58-60 cm bike and that a 63 cm is "too big". I've watched the videos on knee to pedal with cranks at horizontal, etc. Following those rules I've found a 63 cm that fits. I'm wondering why is a bike "too big" if it fits according to this common method?