With Torguuds and Keshiks on the field, Byzantine horsemen cannot effectively deal with Golden Horde archers.

Muscovy Yasak provides +2 armor to heavy cavalry (and heavy infantry) for a cheap wood upkeep. Against an early Byzantine push with Javelin Throwers and Limitanei, choosing the greedier Relic Ovoo can be too risky.

Grand Winery is a consistent landmark that provides berry income and oil, which is crucial for handling Golden Horde's early aggression.

Golden Horde's unit production comes in slow batches because units are produced two at a time for double cost and time. This makes it hard to get a reasonable army quickly. Byzantines are the antithesis: mercenaries come out so quickly, allowing a very fast, large army.

With the Grand Winery boosted by Cistern influence, you can produce a monk in 15 seconds as soon as you hit Castle Age, making it very unlikely for Golden Horde to secure any relics.