Though I agree Pledger isn't an MVP candidate. I don't think the small rise in stats is a true indication of how much he has improved.
Next time the Breakers play watch the man who is guarding him. His man usually doesn't help much on penetration and stays connected to him to take away easy catch and finishes and offensive boards and he gets squeezed on the majority of on balls to make it harder to roll because if he gets an advantage going to the rim its over. Last year people would just leave him to challenge guys at the rim and leave him open for dunks and O boards, but he gets defended very differently now and he gets very few of those easy ones. Plus he is probably the best defensive big in the league, he isn't just a shot blocker.
Just for comparison purposes look at Abercrombies numbers from his last season as a bench guy (2009,10) and first year as a starter (first championship year) . Not much statistical improvement, but a way better player for sure