Need help with DNC and MCH?

[Celestinal]

What class is better and easy to control even at mid high ping?

[Seraphor]

MCH's Wildfire burst is ping sensitive, as it's a fixed 8s you need to cram 5 1.5s GCD's into while weaving. However MCH has a low floor and high ceiling, you can get a decent amount of damage out of it even at sub-optimum performance.

DNC I'm not too experienced with, it doesn't have as strict a burst window, but it can be busier with more weaving, depending on the RNG. I'm not sure if the dance moves themselves might be delayed by high ping, which might cause your Standard and Technical steps to drift out of sync I suppose.
Given DNC's low personal dps, getting your dance buffs out at the right time is crucial to your damage contribution.

[Cetek14]

For MCH you need relatively low ping to play comfortably. For DNC you can even play with relatively high ping, but you won't be top tier damage dealer due to weaving limitations.

[Jirah]

besides ping, MCH is the easiest job in the game, DNC is debatably not too far off but its support adds a tiny layer of complexity and doesnt need low ping

[Gallus]

What class is better and easy to control even at mid high ping?

Better? Arguable.

Easier to control at mid high ping, DNC, by a mile.

[Rai_Takara]

What's mid high ping for you?

I think at some point with MCH you lose out on the last heat blast. On DNC you have more leeway but you still lose damage from being unable to double weave. Not sure which is more impactful in the long run.