The only explanation I can think of is there is something different in one of the illustrations. Probably SIS.
I was curious so I ran a couple of quotes with The Standard (no SIS) for a mortgage broker in NY.
I'm going with a change in occ class due to income. If I max out at 100k on a 3A and max out 60k on a 2A, the 60k policy is more expensive even though the benefits are much less.
Not 30% (40yo male in NY) but it is still more expensive.