You want it NOT to be true...
Really makes no difference to me either way, but facts are facts.
There's no wriggle room for propaganda here, the events were pretty unambiguous.
What events are those? Asylon wasn't destroyed in a single battle; we gave up after Morek locked us into Unterstrom and prevented us from doing anything. That little fight you're hanging your V on was us throwing away the army because we didn't have the gold to ship it overseas. You might've made a better case for yourself if you'd managed to kill Paul or Grimrog (Both of whom at that point actually wanted to die in battle), buuut y'didn't. Big Daddy Morek did all the work for Astrum, just like they always have.