Rugby League is hugely skill based too. You very rarely get tries created by speed or strength on their own. In fact the fastest players are usually played on the wings, where they rarely receive the ball - and only do in attacking situations. The best players play at halfback or five-eighth and are the quarter back equivalent. They're play makers.
Good forwards (particularly locks) are a mixture of the strongest guys, but also play makers to an extent (I guess a bit like a SF in basketball).
Remember, unlike NFL, all players in Rugby League pass the ball. All players tackle (and need to position themselves correctly in the defensive line. There are as many nuances in RL as there are in American Football. But they're very different ones. The difference is, it's much less position based nuances (though there are certainly those), so players have to learn all of them - not just their particular role.
Being fast, strong and catching could get you in a team, but it won't make you a star.
Good forwards (particularly locks) are a mixture of the strongest guys, but also play makers to an extent (I guess a bit like a SF in basketball).
Remember, unlike NFL, all players in Rugby League pass the ball. All players tackle (and need to position themselves correctly in the defensive line. There are as many nuances in RL as there are in American Football. But they're very different ones. The difference is, it's much less position based nuances (though there are certainly those), so players have to learn all of them - not just their particular role.
Being fast, strong and catching could get you in a team, but it won't make you a star.