Explanation of > Level 200 damage?

[Listat]

Also, I believe it was a 2.5% damage increase per inferno level.
The 200+ level base damage bonuses do get higher, but they also have a cost to match. Level 283 auto base damage is 2,290M, with a damage increase of 145. It does raise, but at level 200+ I believe it should.

You sort of have to prioritize spending in order to even get that high, so while yes you have a big base damage, your other upgrades suffer.