Dragons too easy?!? Whatever it is you are smoking, I want some
Unless you exploit some flaw in the AI (line of sight/cloudkill, faketalk, or whatever), the dragons in the game should prove a match to anyone. If dragons are so easy, howcome there is a section called "defeating dragons"? - not to mention the countless posts on the topic. The very fact that you need some kind of strategy showes that it is a tough monster. A kobold you can attack and forget about, attack a dragon whitout any preparetions and you are more than likely dead within the first 10 rounds (or is it turns or keep mixing them up) - give or take a few depending on your level.
"Beyond the grave they will find nothing but death. But we shall keep the secret, and for their happiness we shall allure them with the reward of heaven and eternity." -- Fyodor Dostoyevsky, The Brothers Karamazov