Well, here's my view. Disneyland Park beats out the Magic Kingdom hands down. Walt Disney World Resort beats out Disneyland Resort.
There is sooooo much more to do in Disneyland Park then at the Magic Kingdom, it's not even funny. Take a look at the "specifics" each park has. Note that if there is a comparable item (IE: Goofy's Barnstormer vs. Gadget's Go Coaster) I have omitted it from the list below.
Disneyland Park:
-Matterhorn
-Casey Jr. Circus Train
-Storybookland Canal Boats
-Alice in Wonderland
-Pinocchio's Daring Journey
-Mr. Toad's Wild Ride
-Roger Rabbit's Car-toon Spin
-Jolley Trolley
-Goofy's Bounce House
-Chip & Dale's Treehouse
-Star Tours
-Autopia (Much better then the Indy Speedway)
-Honey, I Shrunk the Audience
-Innoventions
-Monorail
-Great Moments with Mr. Lincoln
-Indiana Jones Adventure
-Pirates of the Caribbean (Much better then MK's)
-Enchanted Tiki Room (Much better then MK's)
-Fantasmic!
-Sailing Ship Columbia
-Disneyland Railroad (Much better then MK's)
Magic Kingdom:
-Cinderella Castle (Much better the DLP's)
-Mickey's PhilharMagic
-Tomorrowland Transit Authority
-Buzz Lightyear's Space Ranger Spin
-Timekeeper
-Hall of Presidents
-Country Bear Jamboree
-Walt Disney's Carousel of Progress
-The Magic Carpets of Aladdin
Well, I think that sums up that Disneyland Park is better in terms of what it has to offer.