I saw someone compare Adama's game to Zac Randolph a while back and the more I think about it its a very apt comparison (if not physique). Adama is a finess player. Obviously he's super strong physically - but between the range on his jumper, and his go-to post moves, they are not power moves. Add to that he's probbbbably like 6'7.5 without hair and shoes and he's going to struggle to score down low amongst a bunch of 6'11-7' dudes.
What I think game highlighted was how he has forged himself into a skilled versatile player and adapted his game wisely as the game went along - he realized he was going to be innefficient down low so he started drawing his defenders out to the perimeter to make them move their feet and either drove by them, shot over them, or used movement in the paint to find angles.
2 things - First, that is professional. It didn't affect his confidence, and he didn't mope - he went to work and figured the game out in his head, and honestly that's the highest level of competitive basketball. Second, add in Donovan Clingan absolutely mauling people while Adama is out, and those two feed off of each other - tiring out the opponent, throwing them really hard matchups to adjust to, etc. We can expect teams to wear down all year under the hoop having to play these two beasts.