I think FAM would have gone 27:09 at Stanford with the same effort.
Honestly, think of the list of (25 or so) guys who are pretty much career 28:30 types who just happened to catch the "30 second Stanford boost" and convert it into a fluke low or sub 28 "test-tube" PR.
And east-coast 27:39 is very ballsy.
FAM should get a "non-Stanford conversion mark" next to his 27:39(like an altitude time).