3 add frames of recovery makes a big difference. Move is SIGNIFICANTLY easier to whiff punish. Whoever said that crouch MP nerf was fake news, was spreading fake news. You can even whiff punish with heavies if you're fast enough.
Luke is still an amazing character, don't get it twisted. This is mostly a nerf to very scrubby play. Crouch MP is undoubtedly one of the dumbest moves I've ever seen, and I've played a lot of fighting games. 3S Ken Crouch MP injected with HGH and copious amounts of steroids. You don't realize how cheap this move was until you fought a rock solid Luke player, but even worse Luke players it was hard.
To summarize "I'm going to stick this move out that's +1 on block, hitconfirmable, 6f startup that you cannot whiff punish, and if it connects I go into 3500+ damage and the corner, but if you dare try to stick anything out, I'm hitting you. And there is nothing you can do about it."
New safejump, which worked before, but now it's 100% required to do.