Okay, so those are NOT reflected in the boxes? What about equipment bonuses?
If the boxes don't show modified stats, then aren't the +/- signs unreliable?
There is an "Endurance" achievement that will increase the gladiator's stamina bar, but it does not affect the gladiator's stamina attribute. There is also a stamina achievement that will affect both. Achievement and equipment buffs are reflected in the attribute boxes.