LOL, yup, I've posted that a time or two myself. Airbust counters that the gross tonage may not be that much better than the 747-8F, but the number of containers it can carry is 50% more.
The A380F is built to carry volume, not weight, which only appeals to a few package shipping companies, such as FedEx and UPS. Airbust still claims a lifetime demand for 400 freighters, but I say they will maybe eventually revive the 10 for FedEx and 10 for UPS in another decade or so, but not much more.
I think Randy compares apple with bananas.
The 787-8F can carry 140 t payload at a range of about 8.000 km. The A380F carry 150 t more than 10.000 km. Up to this range the 787-8F can only carry 110 t.
But what does FedEx, UPS or DHL needed most - mass or volume? The Airbus can handle 1.7 times more volume.
And no doubt for Randy on an Airbus containers are more than one and half times heavier than on a Boeing.