If Luka is trash defensively then what is Kyrie? He's even worse. Dallas' role players have been really disappointing. Boston is playing as a team, Dallas looks far from a well-oiled machine.
As expected Holiday is absolutely brilliant and along with White they lead by example and give the team a great platform to start from on both ends of the court. Brown has really elevated his game compared to the last finals. Tatum is still soft and not the superstar he's hyped up to be, but he's settled into playing team ball and is playing an important role like Wiggins did for the Warriors title-winning team.
Really happy for Al Horford, this has been a long time coming for him. Great player, really deserves the ring.
If Dallas' role players don't get their act together, this is going to be over in 4. I'd expect them to put up a fight though and take at least a consolation win.