No, it's not because I read The Shining when I was younger, and re-read it a few months ago and it's still the superior book.
It's because the beginning was pretty good (if a bit slow), the middle picked up and got GOOD...and then the ending fell very, very flat.
Seriously, Mr. King. You couldn't do ANY BETTER than the ridiculous back story plot nonsense that was Carrie Freakin' TWO? (It's on YouTube if you haven't seen it)
And the top hat being "full of magic..." You couldn't do ANY BETTER than Frosty the Snowman? Really?
So much buildup and some wonderfully creepy scenes, and the last 50 or so pages just lost their, uh...steam.