I don't think his post is pointless. Sure he's not pure barb, but he's probably 18 barb / 1 fighter / 1 rogue which is higher DPS than you (he can pick up SB and has SA). So with higher DPS, he is able to get a higher UMD than you.
He has 43, you have 36, both of you have GH, his motu helmet offsets your cha yugo pot.
1 rogue plash should be able to get 11 more UMD than pure, 13 if boosted. He can make UMD work with far less effort than you.