^ agreed
I think people forget how difficult it is to withstand multiple attacks.
First Kejelcha came at him with about 250m to go and then Edris with around 180m to go before having to hold off all three in the final 100m.
It's the sudden changes in pace that wreck your legs on a last lap. To contend with so many attacks and win just proves that Farah is stronger than the others.
Calculo, next time you are at a running track ask three other similar standard runners to attack you over 400m whilst you try and hold the inside - then you'll understand.