The "battle was lost" anyway thing is getting seriously revsionist, here.

There isn't a ton of in-game information available--we don't get a bird's eye view of the fight, don't know the absolute numbers, dispositions, etc. Certainly the experienced people think Cailan's being rash. That doesn't mean this battle is going to be lost, though, only that it may not be necessary to fight at that time. Obviously Duncan knows the blight can't end without the Archdemon being seen.
But we have more information--the two sets of witnesses who did have a good view both saw treachery, not a battle that was already lost. This is what the returning Circle Mages reported at that ill-fated tower conference; and it's what Morrigan & Flemeth told you. Neither one has any obvious reason to lie.
Also, getting massacred is quite a bit different than simply losing--complete slaughter was exceptionally rare in medieval battles. Especially with fortifications at their back to retreat into, the odds of the Wardens and king being killed to a man would be very low. Unless they were surrounded and isolated because the reserves never showed up . . .
Default137 wrote...
If Loghain had charged in, everyone would have died, including Loghain.
Look
at the fight as we saw it, every soldier with Cailen was pretty much
dead right when Loghain would have charged in, and at least 3/4ths to
Horde was still very alive, and very angry, and we probably only saw a
half of the horde, as there was only one Ogre, and all that jazz.
There is no shot that tells you "at least 3/4 of the Horde" was alive. All you get are shots around the king & Duncan, who are fighting in the van and get overwhelmed there; and we know that happens after Loghain retreats, but not whether it was "right when" he reatreated or minutes or hours later. There's no basis to come up with any estimate of relative strengths or losses, state of the battle, or for that matter even of knowing how many men Loghain had.
reepneep wrote...
Loghain was the only one with experience running a war and he obviously though the battle, as Cailan had set it up, was unwinable. He said so at the Landsmeet and gave every impression of pessimism at Ostagar. If he hadn't quit the field the horde would have killed everyone.
The logic is also seriously flawed. Loghain knew Loghain wasn't fighting, so of course he knew the battle would be lost. His lies at the Landsmeet--which include more claims of treachery by the Wardens as well as his self-serving story--obviously can't be taken at face value.
Plus, at this point, Loghain is unhinged. He thinks Orlais is a greater threat than t he darkspawn, and would prefer the army not engage so it was around to stop Orlais; even sincere advice he offers must be considered tainted for this reason.
Overall, Loghain's version of events is so weak, in fact, that many of those with experience at
warfare--the bannorn, including Teagan--immediately think something
shady was going on, despite Loghain being a supposed genius of previously unquestioned loyalty.
Sir Ulrich Von Lichenstien wrote...
From what has been
reported in the Wiki, Alastair was right that we lit the Beacon late,
Loghain knew at that point the damage would have already been done and
thus sending more lives in to try 'crush' the enemy would be futile.
The signal was necessary because precisely Loghain couldn't know what was going on. If he had a good view of the battlefield, he wouldn't need the signal; he could have just made a decision about when it was critical to advance, or seen the king's signal directly.
The wiki is no more or less an authority than these forums (unless you mean tome of knowledge, but it's not in there.)