We're getting way off topic with this.
EA did what EA has always done when they takeover a company, they rework everything from the inside out so they can screw it up.
That goes for the entire development crew, which is also why there have been so many drastic changes to the game over the years, because EA can't keep people, at least for UO.
Dev teams lasted usually between 6-12 months, at best. McDonalds has less of a turnover rate.
Now, to get things back on topic-
An extremely close second to an AW, and depending on if you were a tamer or not it could be first, is the Skeletal Dragon. Triple damage against certain pets can really cause a lot of trouble for hunters with pets. Once those pets were gone, you were pretty much toast because of the firebreath. AW's could fairly easily be solo'd with a Cu or a Hiryu, but neither was easily melee'd.