Lots of useful advice-- thanks guys!
Yeah, i'dve used a firebelly, except i haven't bought one yet (ordering takes forever where i am), and so wasn't able to field it.
The turning point of the battle was when my mournfangs got a charge in the trolls' flank - but the main charge from the front by my guts with a flame banner overrunning a single troll redirector -- was blocked by an ironblaster. They couldn't close the door, and the trolls were already engaged so they couln' close either. Charge failed, leaving my mournfangs stuck in combat, and then rear charged by a goblin hrde with gobbo characters.
I really think that multicharge with a flaming unit and the dragonhide mournfangs would've torn right through that troll horde. But hey, them's the breaks.
Trouble with simply running up an IG horde unsupported is yeah, they'll probably win, but because of ASL with the GWs, i'll take quite a few wounds before they get to attack. 15 s5 autohits average about 10 wounds, and my opponent's dice were on fire that night.
Battle report should soon be up soon on my thread http://www.ogrestronghold.com/forum/index.php?topic=24382.0
Can't wait for the rematch!