OK, why the Nets for Game 7? 

I could cite the zig-zag theory where it's the Nets' turn to win. Or I could cite these two huge angles: The Bucks are 1-9 ATS the last 10 times as underdogs, while the Nets are 11-1 ATS the past 12 times as home favorites. Brooklyn also is 4-0 ATS the past four times hosting the Bucks. 
I also like the Nets being home where the Barclays Center crowd has provided enough energy to make a difference. 

But in the end it comes down to trust. Mike Budenholzer is an outstanding coach during the regular season. I don't trust him, though, in the playoffs where he seems to get outcoached. 

Giannis Antetokounmpo is one of the top-five players in the game. However, I trust Kevin Durant more to deliver a big performance. Antetokounmpo is great, but he's not in the clutch Michael Jordan/LeBron class. 

My feeling is Durant comes up big, James Harden comes through with a gutty performance and the Nets take care of business at home.