Okay, thanks for the clarification.
But I don't think I've ever heard a detailed, logistically feasible answer from anyone who objects to this as far as what Loghain was supposed to do instead. I agree it would have been nice if Howe died the second he tried to take Denerim, but given the power Howe had already taken for himself I don't see how Loghain was supposed to pull this off without things going even further to hell.
Logistically and realistically it isn't possible.
Not with the darkspawn AND the civil war going on at the same time.
Loghain turning against Howe would have spelled doom for Ferelden. There wouldn't be enough soldiers to fight the blight, even with our treaties.
Heck, even as the game ends, there aren't enough soldiers to win the battle of Denerim if it wasn't for the fact that the archdemon was also there and could be defeated by the wardens. Before the battle really gets underway, Sten and Oghren make it clear that despite the army we built up we're still outnumbered 3-1.