Abbasid can have a really mean timing by rushing feudal and then dropping docks to get boats out, because you can double dock drop as it only costs 75 wood each.

The Camel Archer provides unease, which is great because the Horse Archers have a decently high base damage they start at 12, so getting a couple points of that reduced could make a big difference.

Horse Archers are quite well known for being countered by walls. If those Horse Archers were going to take down that wall, they need a death by about 1,500 paper cuts. It ends up being a very good repellent for those Horse Archers.

For the Abbasid Dynasty going up with Military Wing, he definitely has the ability to get Composite Bows with them. Those archers fire 33% faster, and they can make quick work of Horse Archers at equal levels just because of how much damage they're able to throw out there.

Rus doesn't really use a second Town Center anymore. You use a Golden Gate for resources, use the High Trade House which gives you passive resources, and you don't have to go through the extra Town centers and the stuff that Abbasid has to go through.