The key to beating this Celtic team 4x outta 7 is to minimize the effectiveness of Smart, Williams, and Horford by being extra physical with them. You not gonna stop Tatum and Brown but you can nullify Boston's 3 other key role players because 1) they're not threats offensively, and 2) if they can't get much on offense, they're in trouble cause the Warriors are going to force Boston to have to maintain their defensive intensity for a full 48, which is an extremely daunting task.
I do not see Boston overwhelming the Warriors in two key battles: rebounding and points in the paint.
And GSW easily has the bodies and depth to match up.
If Igoudala and Porter are healthy it will be a boost defensively for GSW cause that's two all around defenders who can play physical and make things a little bit more difficult for the C's wings and forwards.
Warriors can throw any combo of Klay, Wiggins, JTA, Iggy, and even Porter Jr all at Brown and Tatum and give them a run for their money.
Wardell, Poole, and GP are enough to give Smart and White fits and I have a huge feeling Smart will be nowhere near as effective vs GSW as he was against any of the teams he faced in the East.
That leaves Horford and the Williams boys and my money says Dray, Looney, Kuminga, Porter, and Bjelica find multiple ways to keep Boston's Bigs relatively quiet throughout the series.
Kerr will know how to scheme against Boston. I think Warriors are more versatile and can give the C's a wider variety of different looks. From a coaching standpoint, that's Gold.