Pretty good.
When discussing greats you tend to look at those that have set world records or at least threatened records as well as won championships.
Or had great longevity.
Or won great battles against great competition.
Or was Athlete of the Year ever.
Farah doesn't have any of this.
When people look back to discuss the 5 and 10 it's Geb and Bekele.
When they talk of the 1500 Farah won't come up.
Range - although Farah has better PRs than Aouita, Aouita held the WR in the 1500, 3000 and 5000 simultaneously while medaling in the 800 and getting a #1 ranking in the 10,000.
As great as he seems to be, Farah just hasn't done anything that will stand out against history.
Double Gold next year would change that though.
And maybe through in a sub 26:30 time.