Looks at the list...Knights of the nine adds 2 sets of armor, 4 weapons, 8 new locations, and only around 8 quests, YEAH there very close...
Well Knights of Nine had a much better story, the Characters had much more story to them IE: The Knight and his squire you meet trying to do the same pilgram path as you who later dies trying to retreive the sword and his squire comes and finds you...how the Priory of the Nine is empty and in ruin and as you begin recovering the pieces your deeds spread throughout the land and others come.
how about the story of the Ghost Knights? how the leader and the spirit of the guy you battle of the sword(Lord Vlindrell) hated each other and finally got the chance to reconcile their differrences in death thanks to your character....KOTN had a much better story...your actions actually made a difference...i remember how much of a warm feeling i had in my heart the day i completed it...it felt like my guy had made two former best friends friends again who in life had hated each other over petty things.
How about the knight who refused to loan the boots of Kyne to his Knight Brother who died trying to get the Mace of Stendar....had he just loaned him the boots.....its stuff like this....
its not just about the content...its the story...KOTN had me hooked from the get go....Dawnguard...meh....the quest i completed so far....jujst after the Soul Cairn have been boring...feels more like a chore....whereas KOTN had me hooked the minute i met Pelinail in the clouds....