Isn't Jihad and Warpath exactly the same in terms of game mechanics?

And I'm not sure if would cause a problem to have more than one culture able to do a Jihad - because in MTW2 every Muslim faction could participate in the Jihad - and if Germanics and Celts would both get this feature, than you could have Swebos following an Averni-Jihad to Rome which seems wierd...

However - all celtic factions united in a Jihad und thus simply overrunning all of italy seems also quite wierd, if it was thus simple to organise all celts into a united force against any given enemy Ceasar wouldn't have conquered gaul...