Sturm. Better at FOs, has a more physical game, and he's better on the PK. I also think Strum/Duhaime clicked better than Jost/Duhaime have.
Neither of them have great hands and they have about the same speed.
Good point on the faceoff %, but I would rather have Jost because I think he has a higher offensive ceiling potential than Sturm does. With Sturm, what you see is what you get....straight line speed, some physicality and hands of stone, where Jost has a better offensive skill set and ability to improve as he is three years younger than Sturm is. Jost doesn't have great hands, but he is much better at controlling the puck on his stick than Sturm is.
I disagree about Sturm and Duhaime having any sort of chemistry....on the contrary, I think Duhaime and Jost click together more than Sturm did.
Additionally, I think Jost can fit in better with the top 2 lines in spot duties than Sturm. Not saying that Jost has a future as a top 6 player, but his abilities fit that spot more than Sturm's when called upon.