Board Thread:Lore Discussion/@comment-26335203-20160608043212/@comment-28599988-20160707021043

Miraak had been killing and fighting for a looong time before their duel, which believably separated solstheim from skyrim. The dragon skeletons around his temple show that miraak was exhausted from killing them off. the dragonborn is seemingly more powerful but less knowledgable because they are not as old or well versed in the thu'um and magic as miraak. miraak probably would have been enough to beat alduin with the 3 other hero's but he decided against helping and became obsessed with gaining more power.