Fox:
I’ve been playing with that mixup for awhile, so while we wait for Ves’s super frame knowledge, I can tell you already that you are certainly minus frames.
The thing is, is the crouch MK blocked, hit, or counter hit.
On block, you are seriously minus, perhaps 3 or 4 frames, or worse. You can be punished with low jab if you try to press any button, but if you block you might not be punished, it depends perhaps on distance. It also depends on whether or not the opponent reacts with a quick fast move like low punch, or something slower like a low strnog or fierce.
On CH its yay for you city. While I prefer to go for the low RH on ch low mk, the hop after ch mk presents a lot of mixup potential and opportunities. For example I find it relatlively easy to do ch mk ~ hop, low short-stand jab elec.
Regardless, Ves, you are super awesome, and I simply dont understand how to count frames very well, so I would appreciate your input. I do feel, however, that my gut reaction is about ballpark correct.
BIG QUESTION:
Since this is all in the same ballpark, what are the +/- frames for hop after standing lp and hop after low short? This is for block, hit, and ch as well.
I wish i wasnt so frame useless, but my guess is that the low short and low mk are exactly the same, or extremely close, whereas the standing lp has slightly worse frames than either the low short or low mk. These are my guesses based on intuition, so I would love to hear some empirical knowledge.
On hit, I would say you are about even on frames, or likely -1 or -2. This is just my speculation based on experience, but the same caveats from previous paragraph are the same.