Celtics CAN'T shoot that well again...

I see a lot of people keep saying, that Celtics won't be able to do it again. Porzingis won't shoot that well again. Boston won't shoot that well on 3 again. 

Kyrie won't play that bad again. Mavs won't shoot that bad again.

But, is it really? How do we know these for sure?

If BOS beat MAVS 5 straight times now I think, are we saying that MAVS will finally get over the hump all of a sudden? This seems to be a tough bet to bank on. Maybe BOS just really better and have MAV's numbers?

Thoughts?

Celtics have 8 elite snipers. 

Even if 3 or 4 of them are off the other 4 can easily carry them. That's why they are the most devastating team in basketball. Way too many weapons.