That's your opinion, but the common consensus is that Super and Ultra are the contended definitive edition of SFIV.
I like Ultra because it flows better.
I’m a old head when it comes to fighters I got really serious with street fighter with 3rd strike and messed around with a bit of alpha and sf2.
So when 4 dropped vanilla was cool but over all it didn’t feel like street fighter. Characters crossing you up in the corner and being extra floaty.... just yuck.
But I played ultra until it died because everyone else played it.
Typically this is how it goes with fighters the last generation hates the newest generation of fighting games.
Never fails lol