Actually, Moore has started 13 as far as I know, and was 7-6 on a team where every QB in the last 5 years has had a losing record.
So does Henne, who has 5! games in his career where he has thrown 3 interceptions, and NONE where he has thrown three TD's.
Chad Henne wasn't pulled after throwing three int's against Baltimore. He wasn't pulled after throwing 3 against Cleveland. And he wasn't pulled after he threw 2 in the 4th quarter against Detroit that literally gave the game to them. If you're suggesting that Moore didn't deserve to be on the field because he sucked for throwing those INT's, then you should hold Henne to the same standard.
But that's the real problem here. No matter how ineffective Henne is, and no matter that he's really almost never been effective other than like 2 of his first career starts, whenever a backup QB comes into a game and fails to be perfect, they are held to a higher standard than Henne himself.