A3 combos works like this:
-there are a few shadow that mimics everything you do but only the last shadow actually hits you. Think of it as Yangs sei enbu super. Weak punch and kick activation will make the shadow attack almost immediately after you while heavy punch and kick activation will make your shadow attack a few seconds after you do your attack. This can lead to unblockables (shadow hits high, you hit low and vice versa)
-normals does more/scales less than specials
-opponent can’t tech out of your combo as long as you keep on moving/doing something. Any time there’s a pause, they can tech out. That’s why stuff like crouch cancels and walk cancels exist
-huge ass invincibility during activation. The more bar you have the higher the invincibility.
-only one projectile on screen at once (two if you count your shadow), unlike in A3 where you can fire 9 fireballs at once.
-can’t cancel slides into itself except for Vega.
I’ll post more later.