Psikerlord#
Explorer
Yeah I think with an ambush and good potions, the party should have won. I am a bit surprised not a single PC went down though.
I run five 13th level characters against one of those and it was trounced. In fact, the group of frost giants I threw at the party to warm up for the boss encounter ended up being much harder, just to reiterate the potential of multiple opponents of low CR vs one opponent of same CR.
Regarding dragon flight, I must say that I use flying dragons more as a plot element then as a real fight. Maybe it's just me, but I don't think what people usually describe as viable tactics for flying dragons in an open field make for exciting fights. I keep thinking about poor swordsman waiting on the ground while archers and wizards try to do something useful and members of the group are snatched one by one.