Leonard doesn't pile on the points in blow outs. He's at his best when the stakes are high or the game is on the line. We literally just saw this at WJC, where he was fine in the preliminary rounds (4 points in 4 games) and then was the best player on the ice in the elimination rounds (2 points in all 3 games for 6 points total).
You can go through Leonard's game log from this season at BC. I think he has 1 of his 13 goals while BC already had a lead and that was an EN goal. But he has two goals in the last 100 seconds of regulation when the game was tied plus an OT winner.
There's also the difficulty of BC's schedule, the fact that the Perreault/Hagens/Leonard line doesn't work that well, Leonard's injury, and that the BC power play has been one of the worst in the entire NCAA (ranked 52nd out of 64 before last night).
But mainly, right now, Leonard is not the type of player who will compile big point totals in "regular season" play.