As big as Moa is, Georgie Rose is twice the size of Moa
Tbh though I don't think Moa is that big at all in all honesty. He's built really well though and doesn't seem to carry that much fat considering he's a prop compared to players like Rose, Kasiano who have bellies on them.
If Moa does make it into the Roosters first team, I think he'll prove the doubters wrong with his performances.