I don't think all too much of either of their physical games. But, being 6'5 has it's perks, he's hard to knock off the puck, he's hard to move from the front of the net, he can protect the puck against pressure, he can absorb punishment and avoid injury. Outside of the obvious physically aggressive players Ritchie/Simmonds/Bunting/Matthews I think Engvall is one of the more likely players to become engaged with the opposition, like he did last night in the final moments.
I agree that Engvall is too timid, but Kase isn't a physical player.
Kase avoids physical confrontation, has always had a low hit count, he's injury prone in part because of his stature. I will admit that he is willing to go to the dirty areas and he will take a hit to make a play.