I don't know if I personally would say that's the case, I just think modern WDI emphasizes different things than they would have in the past, whether that be because of executive mandates and desires, the changing tastes of people who work there, etc. Sometimes that comes across well, sometimes not. It doesn't help that DLR has gotten a lot of lackluster additions/changes in the recent past, particularly compared to some other parks.
It can be forgotten because some of these things are gone and/or the internet didn't used to be as loud, but older Imagineers put out things that weren't necessarily always winners either. Maelstrom, the Mexico boat ride in Epcot, Meet the World, Body Wars,
MK's is more of a proper coaster in the sense that there are more drops that are from a significant height. It's not just the drop, turn, brake run, rinse/repeat that DL's is for much of the time; it's a more-aggressive, yet somewhat smoother, better-padded version of Matterhorn in the dark. It's a distinctive take on the ride with a personality and approach that the other versions don't have at all. Unlike the other versions, it has a post-show. It also has the iconic star tunnel music playing in the queue:
Also, it's
huge and makes an impression out of its sheer size in a way that Disneyland's and the others simply do not, as seen in this pic from the WDW Monorail:
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Ultimately I prefer the DL version (largely because of the station and on-board audio), but there are definitely merits to the WDW version and I can see why many would prefer it. It's certainly my second favorite MK ride, after their Haunted Mansion.