Egypt are very overpowering, I played a campaign as them and man they have it good!

The Selucids cannot put up a good fight, even if your just using bowmen slingers and Spearmen, but those chariots level up very FAST in battle.

Like Elephants the chariots knock over your men as they run through them, this is one of the reasons why chariot archers are great for dealing with routers (even the Briton Chariots) because you can run through routers and knock them down and then shoot them down at will...

But I also found out that they are not invulnerable. Whenever my chariots hit some solid unbroken infantry they did die well. (generals often kicked the bucket in such a manner).

Also archer fire was bad for them, Horse/camel archers and bowmen always made life difficult for me, because a chariot is such a large target. Cavalry charging them down fromt he rear was also a real problem. I also found out that chariots have a tough time in the very tight city streets, assaulting the selucids pathfinding on my chariots in those very narrow Greek streets was awful. (not the outer area as shown in the screenie above)

The main problem with fighting chariots is the same as fighting elephants, their ability to knock your men on their backs. This way you have to deal with them on their own and make sure no enemy inf is around when you take care of them, otherwise they will exploit it.