I've studied that theory for years. Granted it was an isolated series, but a few years back Phoenix met San Antonio. There was one game in which there were suspensions because of fights the previous game.
Other than that, every game San Antonio--the half-court team covered, it went over. Every game Phoenix, the run and gun team covered, it went under.
I have never seen any evidence, when two dichotomous styles clash that if one style team covers, it's more likely to go over or under.