Yeah- those weights arent correct...or at least one of the weights isnt correct.
Zona isnt the lightest tubing around and comes in mutiple buttings so AC may have selected beefier butting since they need to over-build to be safe, but the road frame that I built with Zona, which is larger than anything commonly spec'd, was just under 2000g once painted.

But unless its a custom frame, most brands are going to error on the side of overbuilt frames and you will see that in the weight because they will be 200-300g heavier than custom alternatives.