This is what made ST so hardcore. The fact reversal window was a single frame. The fact that if you wanted to do walk up command throw with T.Hawk you only got three frames before you went into jump. That hand slaps and electricity required you to mash five inputs on one button extremely rapidly.
The mind game tactics in ST were extremely difficult to grasp, especially at faster games speeds. And even if you knew what do, the inputs required so much concentration, that they became prohibitively difficult. The game required you to allocate so much focus to not only what was going on on the screen, and in your opponent’s head, but also on your hand dexterity.
HDR has made parts of this easier input wise. Making SRK the joystick motion window easier, giving command throws new inputs that don’t overlap jumping, and making hands and electricity two less button presses.
SFIV in some cases went to the other extreme. Making the reversal window incredibly large. Giving movies simplified shortcuts (like df,df for an SRK uh wtf?) but then keeping the old command for the SPD, Hooligan, and Chicken Wing anyways. Makes no sense for half of the moves to get shortcuts and the other half not.
At the end of the day, they are different games, and you need to be able to adapt to both. Ask anyone who played ST and 3S what would happen after playing hours of 3S with Ken or Ryu or Chun and then going back to their ST counterparts and trying to land a throw with LP+LK…
Even now in HDR after playing Dictator in SFIV I try to use LP+LK for throw sometimes before I realize I’m playing a different game.