Unpopular response but here it is - Brian's back looks pretty good, like he lifts properly, and that pose is hit better than the other competitors.
You are of course pulling his pisser with quote.
I give Bianca his delts & arms are a bit better than the other 2
From there downwards his body justs gets worse & worse.
Yeah in that pic his back is slightly better condition than them.
Hell its a very close call as all 3 are lacking in any appreciable muscle development & condition.