I'm a Souths fan - just local rivalry, nothing more.
Every single player that has gone to play union has needed a year to regain his fitness after returning to tgg. That's not just my opinion, have a look on the net and there are lots of interviews with players who have done it.
Are you saying that Brad Thorn took a whole year to regain his fitness? Thorn has made plenty of references to his fitness switching between RU/RL. Queensland must have been mighily desperate. If a player takes a whole season to get fit that is surely a problem with the player. Lee Smith hardly had time to wear in his kit properly before returning following his return to Leeds his waistline appears to have expanded. Some players struggled with their fitness and some did not but not aware of many players that took a whole season to regain fitness so they could maintain a place in the team.