It stands to reason that bringing Ryu into Super Smash Bros. represented a good deal of risk for HAL Laboratory and anyone associated with the project. It's one thing to crossover characters outside their genres, but in a fighting game, people still expect Ryu to behave as he does in more than 25 years worth of Street Fighter titles.
So how did Super Smash Bros. do? This anthology of Ryu's animations — once again from Master0fHyrule — suggests great care was taken to integrate Ryu with the Smash Bros. roster (he joined two weeks ago). Indeed, he was given two Final Smashes and three different attack strengths (light, medium, strong) despite Super Smash Bros. being essentially a two-button game.
For more Smash analysis from Master0fHyrule, check out this catalog of Ryu's focus punch being used on every opponent in the game.
