The 10 sub-8' steeplers flat PRs, according to IAAF:
Shaheen - 3'33, 7'32, 12'48
Kipruto Kiprop - 3'35, 7'39
Koech - 3'37, 7'33, 13'05
Boulami - 7'38, 13'28
Barmasai - 3'37, 7'36, 13'23
Kemboi - 7'49
Kiptaniu - 3'34, 7'27, 12'54
Mateelong - 3'41, 7'48, 13'30
Kosgei - 3'37
Kipketer - 7'33
I think Jager is a 3'33-3'37, 7'30-7'40, 13'00-13'10 guy.
He's the beginning of a paradigm shift. No longer can mediocre/2nd tier Kenyans dominate in the steeple. Soon taller, more athletic runners from other countries are going to find the steeple and being a 3'35/7'35/13'10 guy in the steeple won't mean you're medalling.
Imagine if 25% of the guys in the USA 5k OT final trained for the steeple instead, I mean they aren't going to make an Olympic team running 13'15 these days anyway. How many 8'20-something guys would we have in just a year or two? And in 4 years how many 8'10 guys will we have?
Donn Cabral shows this point perfectly. His flat 3k PR (just ran 7'53, was 7'58) wouldn't get him to NCAAs indoors, yet he's an Olympian at the steeple. How many of those guys from the NCAA indoor 3k could steeple half as well as Cabral and (maybe not run 8'19 right away but) make themselves into internationally competitive runners.
Jager is going to prove that moderately fast Kenyans with crappy form aren't the future of steepling.