Why don't people like to pick/use Tenacity over Determination?

[Kabooa]

Stuff.

I feel like we're tackling the same thing from different sides.

I say DR doesn't apply to mitigation because EHP increases at a proportional amount, while you say it is because the raw damage itself is decreased for each additional instance.

I say DR applies to things like DHit because the relative increase is smaller for the same budget, while you're saying it's not because the raw increase is the same.