Maybe, maybe not, but when comparing their production I would say that Guentzel is probably worth more.
I reckon we'd be giving up more than just a 3rd on top of Lindholm, I reckon we'd be giving up a solid prospect. That return only gives them Lysell as a player who probably plays sooner than later, they probably aren't getting a top notch prospect for DeBrusk, who they would likely flip.
Maybe throw D Petey in there instead of the 3rd, maybe we get a little back from Pittsburgh on top of Guentzel to even the scales. But I'm operating under the impression that both teams would be paying for players they'd keep, not for rentals.