I must admit, I do like The Simpsons and yes, articulation gets sacrificed to accomdate the voice chips.
However, I've always felt the Simpsons could be so much better, and The Muppets line does seem to 'correct' a lot of things I think could have been better in The Simpsons line. But there's no denying that The Simpsons is an incredibly successful line.
I think it's only natural that comparisons get made between the Muppets and the Simpsons. They've both got a cult following.
For some The Simpsons will always rule, for some it'll be the Muppets.
But there's no reason why you can't like both