The three rides to me are basically the exact same. DL and Magic Kingdom are 95% identical. If you've been to one, you'll be very comfortable in the other.
Both have traffic problems. DL has them on the roads outside the park. Magic Kingdom has them trying to get to the parking lot from the entrance because of the stupid lake.
Florida is cheaper than California if you stay off site. Especially if you rent a condo or a house.
A Disney person is going to love either one for different reasons. Florida has rides California doesn't, and vice versa. Florida has the waterparks and Epcot.
You can't go wrong with either one. It is funny to be so adamant that one is superior.