Like you said, it's hard for Shazam to get in and he risks eating dmg or mb iceberg into vortex. Also he is so unsafe on almost everything (torpedo, both grabs, b2) and KF's punishes hurt and lead to a vortex. There is no need to use the meterless vortex, we always have enough meter for mb freeze, cuz of all those daggers. We have an amazing WU as well, he can't start his oki game without a risk. He doesn't have much going for him. Looking at other 6-4s we have, vs Shazam it does feel a lot easier. Vs Zatanna and GA I don't have much exp, I just feel like they can be even from what I've seen, but I'll leave them aside for now. The thing with Raven is, she can be in trait almost all the time, but KF can stay on her and not give her a room to breath. Pillars are scary and full screen grab as well, but she can't spam them cuz of iceberg. She is definitely free on knockdown if not in trait, all her WUs are easily stuffed by f2 xx slide.