"Ancient Warfare" in Wikipedia

[Celtic_Punk]

I have a hard time believing that 50 cavalry of any kind held off that many.
I can believe that only 300 spartans held at thermoplyae (yes i know it was more than just 300 spartans obviously, but i could believe it was only them) because the terrain favoured them so much.

50 cavalry vs 7000 men and a couple hundred cavalry? not a chance, dont care what sources say so.
Maybe 700 vs 50 cavalry....

There's just too many, eventually the bodies would pile up and the horses would become totally exhausted.

Not to mention that many men, they'd eventually bog down the cavalry within a few hours (thats bloody generous) and the horses would have nowhere to run. the riders would be pulled off the horses and killed.