It kind of does.
Liking one movie over another doesn't automatically make the one you prefer better. MFS is generally accepted (and not just by Muppet fans) as a pretty terrible film. Even the people who worked on it knew it was a stinker. MMC is almost universally held up as a holiday classic, and one of the most faithful film adaptions of A Christmas Carol ever made.
You can like MFS over MCC, but as much as you can defend your right to an opinion, one movie is still going to be superior to the other.
I mean, I could say Manos, the Hands of Fate is better than The Sound Of Music. It would be my opinion, but Id still be wrong.