If your goal is to win a league title in the next 3-4 years, then it makes a lot more sense to go with Marleau in this instance. Voracek has nice upside but at the end of the day, theres no guarantee in upside. Marleau on the other hand can be over a point per game player and at worse, is a 65-70 pt player.
Even if you don't believe your squad will be in a position to win a title anytime soon, Marleau should carry more trade value in most league formats, so owning him should in theory fetch you a better return than Voracek, all things considered.
Stamkos was asked today in Tampa how he can top last season:
"Well, get into the playoffs. That's the big key and that's our goal here."
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