Are you sure about those tower stats? I do have an updated build calculator with all T6 and T7 levels, but I have a slight difference on those towers.
I've double checked and they are correct. They are rounded up to the nearest whole number, instead of 2,921,835.6 and 3,432,641.6
Is it true that building dt/sdt on abyss lands only does not affect plunder like the rest of the towers on other lands?