Dejen Gebremeskel is mentally tougher than Mo Farah. Gebremeskel led the last 2/3 of his 26:51 in Sollentuna.
Watch the video of the last lap and see how the meet almost looks like a typical college meet, so low key, and yet Gebremeskel had the mental fortitude to serve as pacemaker for most of the race, and you can see he still pulls away from Kuma in the homestretch, running the last lap in 57.2 and the final 200 in 27.6. Gebremeskel can run away from Mo Farah in the final 2 miles, utilizing his superior stamina and, potentially, a withering kick.
The quality of the video is not great but is worth a look: