I really like this, the XFL should have thought about things like this before, well. Nevermind.
One way to make the NFL section clearly would be to phrase it in terms of "yards to go". So for your example the numbers would be 80, 70, etc. This is much more natural and useful as the yardage units on a football field are hilariously stupid [it should either count from 0->100 or from 50->0->50] you can just skip to the punch line: "How far does my offense have to go?" or "How many opportunities will my defense have to get a stop?" It'll make the comparisons easier especially since, in theory, a team could bid a total distance of less than fifty yards if they're all defense and no offense.