Ok, fine. i guess that makes sense. They are hard in different ways. I still think that in Mistborn era one it is more brutal. In the final empire the ska life is really bad, Roshar peasants never find their life so bad, not even bridge-men. Being a bridge-man id considered the ultimate Rosharan punishment, but think about the pits of hathsin. Also, the ash and killer mist in The Hero of Ages might be worse in the long term than the highstorms. It didn't let things live. I do see what you are saying. Kelsier did what he had to do in his world, but taking him to another world would be catastrophic. The worlds are very brutal in different ways. Era two is a much better world than Roshar.