Some classes have become too overpowered

[Absurdity]

I'm more forgiving for MCH because it's such a very tiny percentage where it could happen.
I don't even usually have it proc and I MCH regularly.

I feel like SAM and their Chiten + LB combo is brutal. You can pretty much all wipe at full
because you accidentally hit the SAM or something. That one is way worse imo.

Also NIN can kill you if you're lower than 50% your HP up to 3 people.
I mean there's much worse out there than MCH but yeah lol.

I do agree. While the instant kill on MCH still shouldn't exist, simply because this shouldn't be a thing in pvp in general, the nukes on NIN and SAM are a lot more frequent.

Ninja feels frustrating to die to because in most cases you can't even see it coming, you just drop from a healthy 50% to instantly dead.

And Zantetsuken shouldn't work on AOEs that just happen to touch the SAM.
I would be completely fine with the instant kill if it were simply down to you messing up, because you attacked the SAM while their counter was up, not because you happen to hit someone else and your skill just happens to do aoe damage. With how limited the toolkits are you sometimes simply can't not use that skill.