At first I was kinda wtf about you saying Westbrook "gagged it up" but, after doing some research, I'm leaning a tad more toward your direction but still far more toward mine. Here are his ppg, rpg, apg, +/-, where his +/- ranked among all five Thunder starters for each game, his fga/fgm, and fg%.
Game 1: 22 11 7 -25 (5) 6/23 26.1%
Game 2: 51 10 13 +11 (3) 17/43 39.5%
Game 3: 32 12 11 +3 (3) 11/24 45.8%
Game 4: 35 14 14 +14 (1) 10/28 35.7%
Game 5: 47 11 9 +12 (2) 15/34 44.1%
Series averages: 37.4 11.6 10.8 +3.0 (2.8) 11.8/30.4 38.8%
I'm not for one second disagreeing about whether or not his -25 in game 1 should count because he played those minutes and it obviously counts but it certainly overshadows the fact that he averaged +10.0 in the four remaining games. His shooting was below average but two of the games were 44%+.
He had his ups and downs but it's ridiculously hard to average a triple double (regular season and playoffs) on a team with that kind of lack of depth and have every single stat look good. If he would've picked his shots better and spread the ball around more so he could average somewhere around 45-47% from the floor, do you honestly see his teammates picking up the slack and them performing better? It might be possible but it's doubtful anyone else on that team would be even a second option on any of the teams that made the playoffs this year.
It's too early in their careers for a proven producer like RW to regularly defer to them and hope for the best. Under these circumstances, saying he gagged it up is like saying the Timberwolves sucked because of Kevin Garnett. Lastly, LBJ has been my favorite NBA player since probably his third year or so which means I'm actually arguing against my own possible bias in this post.