From listening to the podcast and reading this, I'm still sort of surprised by the love for Kirby.
I thought it was a fun game but SO simplistic. Literally about all you could do was stick out your tongue to grab enemies and jump. The platforming was incredibly easy and you couldn't die at all. The shape-shifting was awesome, but usually didn't last that long and wasn't on every single level. There were also a limited amount of things to shift into.
My biggest disappointment was the lack of any real puzzles. From the trailers I thought that unzipping parts of the world would lead to clever puzzles. Instead, it was just grab this incredibly obvious thing to unzip a platform that will be incredibly easy to jump onto and never really got any more complicated than that.
I think it's a fun game for kids with a great art style, but don't understand why that constitutes being better than Galaxy. Being accessible to kids is cool and all, but generally doesn't garner game of the year status. Adults generally want at least some challenge. I think Mario is still accessible to a young age, but provides enough challenge for adults.