Triceps yes, back hell no. Arnold had the best back on stage that night. Nobody had thicker lats.
Simply asking you to be objective.
Tris, yes.
Back...in the photo above, just look at traps, spinal erectors...A may be WIDER, but so what. Y'all know he barely trained for this show, lost a lot of thickness....got hgis old frame back, but none of his old, trademark thickness.