because few of our forwards have an ideal work rate for the positions they are named to/line up at, because as you stated we do a lot of edge running.
Paulo usually will look to spread the play to the edges quickly and only take a hitup off the back of quick ruck where his relative speed & lack of size gains the most ground. He is consistently the 1st forward (exc hooker) in the vicinity of ruck, allowing him to determine a lot of the time where the next play is going to. This is a middle backrower.
Gower is more versatile but bigger & slower than Paulo, which allows (or forces depending which way you look at it) him to play more direct. He can take a hitup, and if supported, the help defence (i.e. not the guy who is marking up on him) have to be aware of his ability to pass before the line. This is a tight forward.
Gower can also play the middle backrower role, but he tends to play it wider than Paulo does for whatever reason, and it gives him less options. However, barring one of them being in the ruck, if they are both on the field only one of them can be playing middle backrower, the other elsewhere (usually Gower at tight forward), otherwise either the play is taking one pass longer to get into the backline, or one of them is playing substandardly as an edge forward (assuming they aren't actually playing at edge forward and just playing shit as it is)
