Played the both games have you?
I have played both - at a reasonable level (wing/centre), there is stuff all thinking for a winger in Union, Forwards barge, Halves play for a penalty wingers stand out getting a a cold. As a player I certainly enjoy both, its the whole team sport thing, but league was more satisfying - and as a spectator, if its not running rugby it gets boring very quick. The whole, play for a penalty thing in rugger is not what I like, e.g watching the welsh go through about 30 phases of play against the Froggies, hoping the the froggies would impinge and give a penalty, instead of having a bloody go themselves and trying to score the points. That sort of negativity made me happy to see the French win.
But this discussion is a bit like the mono/multi dichotomy, where one has to be better than the other in most peoples mind, I simply noted that the Kiwis may have beaten Australia
in the rugger, but they got their posteriors comprehensively handed to them in the League test. Either game is good, I certainly dont subscribe to the meatheads/thinking man bullshit, they both need physical skill, aggression, courage and tactical nous.