Ryu's style is Ansatsuken, period, it has never been Karate, and certainly not Shotokan. Capcom USA made up the reference to Shotokan for SF2 because it was a known form of Karate. Ansatsuken is officially supposed to have strong inspiration from Karate, but also Taekwondo, some Kung Fu and a bunch of other stuff.
If I struggled to the end of my determination, to the end of my way of life with my followers, if the result is ruin, then this ruin is inevitable. Grieve. Shed tears. But you cannot regret.