-Meter goes to 200% then auto-heat
==> have you ever seen a good player heat activate on offense? heat activation just isn't an offensive tool, it's a defensive one, bypassing it but still getting health regen allows you to retain your offense while regening the hp
-200% meter (lower cap)
==> A lower cap means you can achieve HEAT much faster than usual especially when you are getting meter from combos and blockstrings. When you want to save your meter for autoHEATing when you have more red life to gain, you have to do some meter management and intentionally spend 100% to keep from losing 200% (i.e. spend 100% to save 100%). At first it seems like a waste, but a character can usually use an EX offensively to reset pressure, for example roaH can do EX lightning bolts and run in and restart pressure while saving that 100% meter that wouldve otherwise be lost. In the end you are able to get HEAT much faster than the other moons, and when you want to save the meter for later you do that by pressuring with EXes.
-Stronger bunker and larger guard bar, auto-counter after EX shield, auto-burst
==> Basically H-moon doesn't need to concentrate too much while on defense. Your bunker is very low risk and gets you out, your shield has an auto counter which will auto-launch for you without you having to decide what you should follow a shield with, you don't really need to ex guard because your guard bar is bigger, a completely safe burst happens automatically, so on and so forth. These are all low risk options for H-moon but they also have lower reward; defensively C or F moon can EX guard to withstand pressure much longer than usual, they have a weaker less reliable bunker but only costs half as much meter, and shielding and ex shielding can be followed up in different ways that may be more damaging or otherwise rewarding than an auto-counter launch. The C and F moons really lose out on the burst, though, it has to be done manually, can be baited and punished, and "costs" more meter. The general idea is that H moon has been given the tools it needs to escape from the defensive position and only that.
-6aaa
==> It's basically a high sweep which usually allows for stronger combos since they get launched up so high then fall all the way down. It's impossible to combo into some charged ground normals without 6aaa: roaH's and tohnoH's 6[c]'s, to name a couple
so yeah there you go.