I don't remember much of Lavar in the UFC and I don't really watch Bellator. Last night we didn't even get to see Kongo and him go at it, cuz Kongo just out wrestle/ground fought him.
Still though, you need more than Heavy Hands, you need skills to fight the best(top 5-10) in Glory at any weight, FW is pretty weak, but the top 5 are good. Even in the HW division, which is one of the weakest that they have along with FW you need real striking skills(and Glory is NOT K-1, so don't even start talking about Overeem, maybe 5% of the fighters are former K-1 guys). I mean, Dustin Jacoby has heavy hands, look what happened to him when he tried Glory, he didn't have the skills, he's 1-5 in the promotion.
He'd be able to KO guys below the top 10 like Barry, I mean he's KO'd him before.