Roman Cancels are all just RCās man. RCās are used for the standard cancels that have a red cancel effect when you do them.
The rules are essentially, if the opponent is in hit or block stun, you can RC anything at any time and it will be a normal Roman Cancel.
If they are not in in form of stun, you can RC anything, not counting specific moves like DPās, and get a YRC.
YRC is not an official term, itās just what we used to to refer to a RC that has the yellow cancel effect and is done without anything hitting. You canāt RC DPās because that would give people a very safe reversal that forces a form of advantage due to the slow down. Itās best used for canceling projectiles, or mimicking FRC usage by canceling other moves early on (Fafnir/STBT YRC for movement or mixup purposes, Gunflame/VCL for oki.)
When you cancel a move that would normally be a PRC, meaning still without the opponent in any stun, too late, you get a Purple cancel effect. This is probably to prevent instances where you do a move and wait for an outcome and THEN try to YRC it, i.e doing a Gunflame and trying to YRC when someone attempts to jump over it. Timing would probably be too late and it would require 50% tension instead.
All RCās cause a period of time slow which is essentially a super freeze, meaning the opponents inputs are pretty much eaten, anything they are doing is massively slower, and any stun that is occurring during that time frame is essentially extended. This is good for combos (Faust doing a max range f.S>RC>dash into full combo, Millia getting her shit going from far hits too.), for Oki (I-no doesnāt care because you canāt reversal and have to deal with her high/low oki.) and just general bullshit (Chipp YRCing Teleport and punishing your pokes, Potemkin YRCing Hammerfall and seeing if you are jumping or on the ground and doing either Heatknuckle or Pot Buster.) Additionally, the time freeze is longest for normal RCās, and shortest for the PRC, with YRC naturally being in the middle.
Also YRC and PRC have startup, which is why you can sometimes see instances of a YRC occuring after someone has been hit. YRC is like 4f? I think. PRC is longer, and IIRC normal RC has no startup. And Meter wise YRC is 25%, RC and PRC are 50%.
Uhmmā¦anything else⦠Bursts donāt count as being in stun, so if you can YRC a move that happens during the opponents burst startup. There is a pretty strong OS from it.