Originally Posted by
Portolan
Under the old system a Silver who flew 25K miles got 31.25k miles for flying and 6k miles for spend = 37.25, so their net loss is only 10.25k miles (not 12k) that's a 33% reduction.
For Gold it works out to a 31% reduction so proportionately they are quite close.
Thanks for correcting my math. But remember that the gold to put the extra 25K miles on UA probably overpaid on a few flights. So he's also lost out there.