Hey, I don't know if this was already posted, I saw some, but not all, so here's a list of Ryu's moves and their SF4 equivalent
Light means tap, Hard means hold) (unless noted, all moves are standing far)
L: Light, M: Medium, H:Hard
P: Punch, K: Kick
Light Jab: LP
Second Jab (after light jab): Close MP
Third Jab: HP
Heavy Jab: HK (not sure about this one)
Light F-Tilt: MK
Heavy F-Tilt: -> + MP
Light U-Tilt: Close LP
Heavy U-Tilt: Close HP
Light D-Tilt: Crouch LK
Heavy D-Tilt: Crouch MK
F-Smash: Half-Circle Forward + K (SF3)
U-Smash: Crouch HP
D-Smash: Crouch HK
N-Air: Diagonal Jump LP (not sure)
F-Air: Diagonal Jump HK
B-Air: Jump HK
U-Air: Diagonal Jump MP
D-Air: idk
Neutral-B (Quarter-Circle Forward + A/B): Hadouken (Quarter-Circle Forward + P)
Side-B (Quarter-Circle Back + A/B): Tatsu (Quarter-Circle Back + K)
Up-B (Forward->Down->Down-Forward + A/B): Shoryuken (Forward->Down->Down-Forward + P)
Down-B: Focus Attack (MP + MK)
(Half-Circle Forward + A/B): Shakunetsu Hadoken (Half-Circle Forward + P) (SF2) (Similar to EX Hadouken in SF4 (Hadouken motion + 2 punch buttons))
Grab: LP+LK
F-Throw: Forward after grab
B-Throw: Back after grab
U-Throw: Close HK (only the animation)
D-Throw: idk
Pummel: Close MK
Edit:
Not tested, but I believe that simple motion specials (b, f-b, u-b, d-b) are equivalent to the light version of SF specials, while motion tap would be medium version and motion hold would be hard version.