I remember Jeff Probyn well, he was England prop when I started watching RU. His game was based around the set pieces and the ruck and maul, so he was a very union-oriented player. He probably never thought about crossing codes to turn professional in league because it wouldn't have suited his game, but he would have dominated amateur league players because he would have been far too tough and physically strong for them.
No doubt you think you're being a smartbooty by making the suggestion that league is better than union, because he wasn't a player suited to it, but your question is about as relevant as asking Mark Roberts and Mike Gregory if they would been able to win any lineout ball against a university union XV.
No doubt you think you're being a smartbooty by making the suggestion that league is better than union, because he wasn't a player suited to it, but your question is about as relevant as asking Mark Roberts and Mike Gregory if they would been able to win any lineout ball against a university union XV.