You haven't considered Cataphracts trample damage, indeed they should do decent vs imp camels in groups.Actually they go quite even with the Elite-Cataphracts slightly on top, since they deal more dmg to the Camels and have a faster attack rate.
Both killing each other in 15 Hits, while the Camels deal 10 dmg on hit and E-Cata 11 dmg.
Even with the lack of bloodlines and missing the last attack-upgrade (I thought Byz have FU trash) for E-Cata they should come out on top in equal numbers. Cost-efficientwise Byz looses by a lot.
In a real game that scenario is very unlikely though.
Well malay eles doesn't count