Tavern Brawler - When you make an unarmed attack, use an improvised weapon, or throw something, your strength modifier is added twice to the damage and Attack roll.
So yes, STR bonus x3 seems legit.
As I don't use Barbarians I'm not 100% sure, though.
But I do remember seeing "Tavern Braweler is OP/broken" threads or posts.
Last edited by Buba68; 23/05/24 10:54 AM.