Or, if you switch to OR and slavery to whip, then to caste and Paci for some GP, and then again to building infra, and in some time in the near future of superbly developed and advanced empire you put some turns into whipping some units under Feudalism and Theocracy.
Well, if you put Saladin in context of making as early as possible rush with his Camel Archers, he doesn't really shine. Anyway, any knight rush is too huge of a gamble compared to cuir rush, and Saladin with his SPI will get you there faster. But that is very narrow view. There are other VCs than domquest, like culture or UN and Saladin can be very competitive there, again, solely due to Spiritual.