Menzinger
Kessel4LadyByng
JVR has been outproducing Bozak while they were in the same situation (on a line with Kessel and then on a line with Parenteau). JVR's average P/G is being dragged down from his days in Philly when he was young and still developing his game. JVR is also several years younger, a couple inches taller, and better at driving possession. I think it's pretty clear that JVR is the better player and that he's a better fit for a rebuild due to his age. Is JVR enough better for Bozak that we shouldn't trade him? No, but that doesn't mean we should settle for a return either.
JVR is also capable of getting 30 goals. Another edge to him.