Saw that for my height and inseam I lean forward on my ST and would be straight up (0*) on the CTX1300 (knew this). I am also more crouched and knees more bent on the ST compared with the CTX (knew this also). This tool is good to put a number on it and shows just how much (didn't know this). Also, what surprised me is how much more I am leaning-crouched-knee bent on the ST1100 than I would be on the ST1300! I guess the one primary thing I noticed when I test rode the ST1300 last year (?) was how twitchy and unstable it felt compared with my ST1100, due to shorter wheel base on the ST1300, so the ever so slightly more comfortable seating was mostly missed. I do remember thinking it was more comfortable than my ST when in "stock" configuration. This tool doesn't take into consideration that I've modified my ST with a different seat and significant risers to make it fit me better so my lean-crouch-bent numbers are different, better, than indicated here. The CTX is still the best for comfort by the numbers.