I'm more inclined to think he made the right decision for the wrong reason. Reducing federal power, even if it was for a good reason, feels like something he would automatically be against.
APP and QPP are both not good ideas financially, but both are attempts at independence from the Federal government. However, Quebec has a much stronger case for that than Alberta.
Besides that, QPP's case is better because:
Quebec is a much bigger percentage of the Canadian population, so it has the benefit of scale.
QPP was created at the same time as CPP, so there was never any debate about initial transfers.
It seems like he's continuing to spin this as the PMs fault.
To paraphrase a quote from the article:
"The PM is creating devisions in the country, so it's therefore his fault the Premier of Alberta is trying to decide Canadians."
And a lot of his base is going to eat that up like candy. Facts don't matter when you have a good soundbite.