How can they be an entire legion?

From the looks of things the troops in the battle are about the number you would expect to be guarding a base that size and that important anyway so adding another five thousand onto to that would have made for a much more epic and expensive battle.

I think the EU crowd would probably say they weren't clones anymore as they were phased out for some utter bobbins reason.

Anyway these are the off topic boards so on topic posts are off off topic.

You want the off off topic boards for that.