I think what the OP is getting at is that everything in the game seems to be more powerful than dragons, which is not the way the game should have been. Dragons should have been generally stronger than most enemies.
Blood dragons are the weakest dragon. There are weak mages, there are strong, "Holy Crap I Just downed 7 potions to kill this guy" Mages. There are weak bandits, then there are bandit Chiefs that on their first swing against me, automatically went into a cinimatic kill
Draugr Deathlords/Overlords are top notch meleers
Blood dragon hurts a little, Elder dragon hurts a lot, ancient dragon, with 600 armor and 400 health can two shot me. All enemies vary.
Blood dragons still compare to chief bandits in the time they take to kill, Draugr Deathlords and Acendant Casters compare to Elder dragons. Dragon Priest so far is the only foe that compares to ancient dragons