It does, but you also need to consider other needs.
I think there are a number of Anaheim fans who agree with you that this wouldn't be a bad approach. The issue is that the team is also trying to improve themselves up front. Moving someone like Fowler could help that. The question is whether it's an overall gain for the Ducks. I'm skeptical of that.
But if you move Fowler for a first line LW most of the deals are going to be at best cap neutral
Moving him for a top winger will help your scoring but I don't see how it helps you internal cap situation (presuming you guys still have one)