I was editing my post as you replied, will just do a new post:
So I did some more searching to learn about the landing recovery frames properties and got the info from SRK’s wiki pages (http://wiki.shoryuken.com/Street_Fighter_IV/Game_Systems/Landing_Frames_Trip_Guard).
Here’s what I understood so far and someone please correct me if I’m wrong:
So when you perform a jump-in attack, there are 4 landing frames, you can’t do shit on the first 2 and that’s why 3 frame SRK’s are impossible to safejump. It says that you you can block on the 3rd and 4th landing frames which is why we’re able to safejump 4 frame reversals, but it also mentions that you can’t special cancel or do Anything else but block during these 2 frames, since EX TT is a throw so it can’t be blocked, is that the reason why it’s beating the safejump?
An example of a perfect 4frame safejump vs Abel’s EX TT:
Last active frame of Akuma’s j.hk (or DF palm) > 1st frame of EX TT
landing frame 1 > 2nd frame of EX TT
landing frame 2 > 3rd frame of EX TT
landing frame 3 (can block only) > 4th frame of EX TT
landing frame 4 (can block only) > 5th frame and EX TT got active so you get grabbed because you can’t do anything but block
3 frame normal reversals are impossible to safejump as we already know, but when it comes to grab attacks, it seems like 1-5 frame startup grab moves are impossible to beat with normal safejumps if they have enough hit invincibility frames and get active after you land (i.e I tried with Gief 0 frame U1 it got active while I’m still in the air so it didn’t work, even though the frame data says it has 3 active frames).
For example these moves seem impossible to safejump normally:
- Gief & Hawk’s EX SPDs, they both have 4 frames of startup
- Makoto EX grab, 5 frame startup but vulnerable to palm since it has armor
- Akuma’s U1, 4 frame startup
These will lose if you delayed your jump-in on purpose so you’d hit them out after the hit invincibility frames are gone, but I don’t think that can technically be considered as a safejump, because if the opponent has other normal relatively fast reversals, you’ll lose to them.
Also there are some moves in the game like Ibuki’s U1 or Rog’s U2 grabs, I’m pretty sure these are impossible to safejump if you did a perfect 4f safejump, but they have like 1 frame of invincibility so they will lose to jump-in’s that aren’t done as fast as possible (i.e 5f safejumps which is what most people time usually anyway).
Again, if I said anything wrong please correct me guys because I don’t want to confuse people with false information lol.