He’s a positive every single year in the regular season.
He’s a negative every single year in the playoffs
-17 over 59 games in five different playoff years. That’s far more than “6 goals you can watch”.
Again, I’m not the one making the case that he’s too small for the post-season. I’m not even saying he’s bad or shouldn’t play. You can have those arguments with the size queens and I’ll back you up. In fact, I have in the past.
But even though I don’t know what it is, there is SOMETHING there. Something is happening in the post-season that differs from the regular season with Gryz. The results are not only inconsistent, they’re night-and-day.
I think the minus is the result of a lack of offense, more than a failure on defense.
Gryz has been on the ice for 45 goals against in 59 playoff games. McAvoy has been on the ice for 56 goals against in 65 playoff games. Obviously McAvoy isn't incapable of defending in the playoffs. There is nothing inherently wrong with him because of all those playoff goals allowed.
On the other hand, lack of depth scoring in the playoffs has been the biggest criticism of the Bruins (by Sweeney and Neely) in recent years. Gryz has been on the ice for 22 playoff goals for, playing primarily with Charlie Coyle and Sean Kuraly. McAvoy has been on the ice for 57 playoff goals for playing almost exclusively with the Bergeron line. Some of that is on Gryz for not scoring himself, but the analytics show he does create tons of opportunities for his line mates.
Fwiw, I understand he has faults. I'm a supporter and I think there are things he does defensively better than most of the league but obviously winning physical battles is not a strength. I just don't see that correlating to goals against the way people here make it out to be. Folks blamed him for Carolina, so I watched the goals and saw him make mistakes like a bad pinch, but none of the goals were him getting overpowered. Folks blamed him for the Islander's series and it's true that he was terrible in the final game, but the previous 10 games (5 Isles, 5 Caps) he was excellent against size. He was excellent against size vs Columbus (+1). The one team that I think really got to him was Tampa back in 2018 and it's the reason I still don't like seeing Gryz-Clifton paired together.
To answer your original question, I would go with...
Gryz-McAvoy
Lindholm-Clifton
Orlov-Carlo
and condense to...
Lindholm-McAvoy
Orlov-Carlo
for the last 10 minutes of a game if we need to protect the lead.