Boyle can score as evidenced by his nice littel 21 goal season. Having a playmaking LW for him would benefit him, not hinder Tanguay.
When Boyle scored 21 goals, he started 60% of his shifts in the defensive zone. That's pretty heavy defensive minutes, but not unreasonable.
Last year, Boyle started more than 70% of his shifts in the defensive zone. He was on the ice for 187 offensive zone faceoffs and 463 defensive zone faceoffs. Of all forwards in the NHL, Brian Boyle was used more defensively than all but 4 (Jim Slater and 3 Canucks).
Those are definitely not the kind of minutes you want to give to Alex Tanguay. If Tanguay was a Ranger, he would certainly not play on a line with Boyle.
Moulson is talented at what he does, which is goal scoring, and there is no doubt about that. The guy has a nose for the net, but Islander fans say that about him because he plays with a guy who probably has top 5 vision in the entire league. Tavares really sets him up with some beauty plays that not many other guys in the NHL would be able to do. Moulson would be a 15-25 goal scorer without Tavares most likely, he is pretty average in every other area of his game.
With that being said, I take Moulson because he has proven to be a clutch goal scorer.
Tanguay is a 15-25g scorer without an elite center on his line and when you factor in his playmaking, it isn't close.
Tanguay has already proven to be the clutch in the biggest stage of hockey. 2g 1a in game 7 of the cup finals. PPG in the playoffs.