I dont think so, simple because a mansadbar siege elephant costs 1400 resources, and a changdao 200 (counting the fact that its F.U.), and also siege elephants arent classified as cavalry, so changdao bonus dont affect.
Even though it would be a very close match, since simply siege elephants suck vs meele units.
F.U. Exalted arquebusier.
Mansabdar Mahout
uhhh, I think that even that cant beat the rifle rider with all the conditions I said...
Anyways, explorer with crackshot.
Gendarme
actually, I dont think a gendarme could beat a rocket, I mean, a rocket needs just 2 shots to kill a gendarme...
anyways...
1 F.U. legendary Puma Spearman.
FU Black Rider