Prep 4AB also has disgusting range, I can't see much going wrong. Frankly, if in your scenario his opponent can react perfectly to things such as prep, then Raph should also have perfect reactions for fairness sake.
In SC people either can react or its part of a mindgame.
In the situation where you have a 50% mixup at most, an opponent knowing the matchup can be only in 2 situation:
A) cannot physically react (i18 moves are the borderline usually but the animation pays a role) thus has only to know wich option he has opposed to your options and just needs to buffer the answer during hit/block.
If your options are 10% success and deals low or no damage opposed to huge punishment then your stance is WEAK,
B) can wait and react
Case A to see balance you have to evaluate risk/reward
I don't think that RE is an answer i think stepG and followups is.
See scV in wich anyone could quickstepG ANY prep option but SE B delayed that was reactable even online. (also perfect guarded)
Now we shouldn t even discuss 4B since its not a good prep starter unless you plan to hit with its TC or at tip where you can simply avoid prep to be relatively safe.
But in this case 44AB as a starter is way better since it Always have been neutral or + on block.
So i really cannot und erstand your point since 4 can be punished. Unless 464 does something different at all.
Tell me, how do you shut down 464 in a way that beats me staying in AG, every prep option (because I can just tap 6,) RE and CE?
Most character have tools ex double angel step, mitsu 6B+K and similar
also
CE to name one since you are relying on broken things you need a bar to use.
StepG is another one.
464 doesn t deal any damage afaik.
And even so:
opponent stepG
you either: attacked with a vertical, most K, CE or RE = whiff for huge punishment
A: blocked at best
464: answered on reaction
SE: StepG on reaction maybe punished for low damage anticipating A or K as much as preparing an easy GI.
SEE above for how risk/rewards works.
Can you show some vid at least so maybe i get what you mean and i can see how your opponent answer your prep?
It would solve any problem at once.
Unfortunately friends i used to play with in scV with raph matchup knowledge are on PS4 while i am on PC... or i would simply ask you to play.
It could also be that i am doing 464 wrong because its too easy to punish.