What are you talking about? All of the sudden Rupp, a guy who for years was viewed as a guy who couldn't kick, is now viewed as a guy who has supreme speed for the world class level?
however, if you have excellent speed ( 1'49i in past ), you coud expect to be quicker than that, so a proposed near 12'50 for him last year is certainly feasible
I don't give a crap as to what his 800 pr is. The fact of the matter is the Africans 5k guys rarely ever run the 800.
1:49.87 is back to back 54.9ss and that means nothing to me for speed.
1500 pbs are much more indicate.
Here are the 1500 pbs of everyone in history that has run 12:45 or better. Hell, I'll even through in a 12:46 guy.
12:37.35 Kenenisa Bekele - 3:32.35
12:39.36 Haile Gebrselassie - 3:31.76
12:39.74 Daniel Komen - 3:29.46
12:46.53 Eliud Kipchoge - 3:33.20 (3:50.40 mile which )
Galen Rupp - 3:39.14 - 3:56.22