Board Thread:Lore Discussion/@comment-71.58.163.238-20130703034923/@comment-3573184-20131018055341

I would like to point out that there is no difference between dragonborn, and dragonblooded, the only source on the matter uses both words interchangeably.

Wulfharth, Tiber Septim, Miraak, and the Dovahkiin's geater powers comes from the fact they they were made for a highly specific reason, as in, to fight other god-like beings, whereas the other Dragonborn were just around to light the dragonfires.