Originally Posted by
Caribald
...
392% and 351% INCREASED movement speed, not 392% and 351% OF normal movement speed. I don't know why you subtracted 100% from both results.
Also; 492/451 = 1.090909090909 repeating = 12/11. Just because a paladin (or frost (or is it unholy?) death knight) moves 41% of normal movement speed faster than others, it doesn't mean they move 41% faster than others. They move one eleventh faster. An even easier calculation would be 120% / 110% of "normal mount speed".
This is the same reason I hate when people say "shamans got a 15% healing buff". No they didn't. They already had a passive 10% boost, meaning 110% of "normal healing". Increasing the boost by 15% to 25%, they now have 125% of "normal healing". 125/110 = 1.1363636 repeating = 13.63636% = 3/22 increase.