Too lazy to check exactly how many races in a row he has won in these two events but the win streak must be pretty big now.
He seems to be levels above the east africans - so much so that he made the 5000m WR holder in Cheptegei flee for the 10000m in the olympics. Aregawi gave him a scare but as good as he is he is inferior in all aspects to Jakob.
As for other westerners, there's always Nuguse, Hocker, Fisher, Kerr et al. but they always seem to duck him when the championship races come around. Fisher is quality and has certainly improved, but one can't forget that the last time he raced Jakob in the 3000 the latter broke the WR and the former finished DFL.
So what about the up and comers? Could Laros be the one? He's claimed a couple of Jakob's age records and recently ran 7:29, indicating sub-13 shape for the 5k (Jakob ran 13:02 at his fastest before turning 20).