I see what you're saying OP. There have been many things MaxPC does a great review on that turns out to be shitty.
That they are getting the cream of the crop is probably closer to the truth than anything else.
But the Mag doesn't revisit their reviews, they hardly ever give us updates on products. What bites my ass is they will test a component and then, six months later it's still on the Best of the Best list and there's at least five others I would recommend WAY before their "Best".
The best thing to do is dive into these forums before you make a purchasing decision. Sometimes, MaxPC hits the mark. Other times, they don't or they just don't update it. After all, all they do is test it and that's pretty much it. Rarely will it go into a long term test situation in their offices for them to report back on later. And really, I think they should do just that.