A Lightning podcast I listen to just summed it up pretty well. When Tampa won a Cup, Brad Richards was vital, obviously. Brad Richards was one of the softest guys in the league. But Richards had Modin on his line. Modin was a good combination of size and a bit of skill.
Tampa doesn't have a Modin right now. They don't have an Anderson or a Wilson. They don't have anyone that can make room. Tampa doesn't shy away from physicality like people think, but no one is worried about getting hit by Yanni Gourde. Or Paquette. Or Stamkos. Or anyome, really. You can take a hit from one of those guys to close out a play, cause it's not gonna matter at the end of the day.
You can't be all size and you can't be all skill. You gotta have both.