Can someone explain AA math regarding the 500 mile minimum per segment?

When US was US, DM gave 500 EQM minimum per segment for any status.


AMERICAN AIRLINES 4055 Y RDU JFK 12/7/15 426 574 1,000
AMERICAN AIRLINES 1724 Y PHL BOS 12/8/15 281 719 1,000

Today I noticed these two in my activity for the month.

Now, on US, that would show 500 EQM and 500 Bonus (more like 375 Bonus)

But this still shows the same total miles earned (1000) but splits them by actual miles, so where I was getting 500 EQM per segment, or would have gotten 1000 EQM for those two flights, I only got 707 EQM...

Is that just how it is with AA, or has that changed?