But the original comment was about Vegas... not MK
The MK was just used as a reference to illustrate what it means to have thousands approach a platform at the same time. Disney runs 4 trains, but never comes anywhere close to stuffing the cabins near capacity... especially with the stroller brigade. (and each train isn't pulling a new full load every 10mins). Plus their cab design is not optimized for standing.. so the MK system is especially weak for these peak loads. Yes, they get the advantage of both the Resort and Express loops (which LV doesn't..) and still can't handle the full load of the park exit. LV if I recall have an open floor plan with edge seating IIRC making their cabs more suitable.. but still something like 220 per train. So close to 1 light rail car... but the light rail is running 3 of those per train
I bet MK averages more like 36-40 people per train instead of 60.. and if a train only makes 2 loops an hour.. that would only net you about 500ppl an hour per train. Or 4000 people an hour for 8 eight trains. Even if you said they made 3 loops an hour.. that's still a pitance. And back to LV... they only have 9 trains total.. and 1 track to use in the 'leaving' direction so even tho their stock carries far greater # of people than Disney's.. even at 220 people per train.. dispatched every 4 minutes.. it's still pretty tiny compared to the 10s of thousands of potential riders.