Subban is just as much a part of those PP problems as Markov and Diaz. Diaz and Subban get around the same amount of minutes on the PP. Subban actually gets about 45 seconds more than Diaz per game.
Diaz produces a point about every 9 1/2 minutes of PP time. Subban produces a point every 11 minutes of PP ice-time. Markov is around 8 1/2 minutes. Bouillon has played 34 minutes on the Powerplay and has yet to produce a point. Maybe it's time to try a forward back there, or double shift Markov, while giving Subban more of his PK duties?
I don't think it's a fair observation.
Markov is always playing with either Diaz or PK on the PP, so obviously, he will average more points per minute.
Diaz played 6games more than PK, all of which he spent with Markov. Since then, both PK and Diaz have been flip flopped between Markov and Bouillon, with PK getting a little more time on the first unit.
The real question is who played more often along side Markov on the PP. The one that did is likely averaging more points than the other per minute. Due to him having played 6 games more, I think it's obvious that Diaz is the one that played more next to Markov. So it's only normal for him to avg more pts per min than PK.
I don't have a problem with that though, at all. But I do think Subban should be used on the 1st PK unit.