Internet consensus or no, this is a respectable opinion. If you compare opening day MK to 1971 DL, it's clear that they improved on the original model significantly. MK wasn't just physically larger, it had a set of original attractions, and the duplicates it had largely improved on DL's versions. Of course, 2013 is another story.
The internet consensus is very recent. Fromt the late sixties onwards WDW was considered the new, better version of DL, which came to be considered 'quaint', having 'charm' as its last defense against the massive newer resort.
WDW was bigger, newer, the improved version of the test model of DL, taking what worked and avoiding what didn't.
Then WDW only kept expanding and expanding. The Village, EPCOT, DHS, water parks, DAK, resorts. By the end of last century everything that is at WDW was already at WDW, while DL consisted of a park and a parking lot, with some sort of hotel to the left. Add to this that DL went through an even darker period than WDW after 1994, leading to such travesties as the destruction of Tomorrowland and DCA 1.0. For mosty of its history, DL was the preserve of Disney obscurantists, locals, and all those LA tourists who discover that there actually isn't anything to visit in LA besides DL. There is no there there, no Hollywood.
It was only the 50th anniversary in 2005 that re-awoke DL in the public imagination, a proces completed by DL turning into a proper resort with DCA 2.0, only last year.
Also, almost hidden from view, DL was taken better care of over the decades. In the 70s, WDW had the much larger Space Mountain, DL the small kiddie version. But DL did install the new version, WDW never did. WDW had a double Toad, but demolished it. WDW had the far superior submarine ride, but thought it too expensive to maintain. EPCOT was destroyed in the nineties. The Studios lost their studios.
Over time, all of this added up. But it wasn't always like this. On the contrary, historically, DL has been considered the lesser experience for most of its existence.