Going strictly by numbers, "swing" is definitely the thinnest of the areas Stevens describes.
That said, none of our "bigs" is spectacular, and no team recently (ever?) has won a title without at least one legit big. This year's Warriors used a lot of small ball, but they still utilized Bogut, Lee, and Ezeli quite a bit throughout the playoffs.
The only team good enough to ever win a title while playing true small ball (that is, using it nearly all the time) is the team LeBron's on, and that ain't us.