That's an opinion, and not a fact
This whole entire thread is one thing, opinion. The only thing we can call fact is the evidence used to back those opinions from the game. So to say something is opinion in this debate is to summarize everything you yourself and everyone else has said here. By it's very nature this thread is opinion and nothing more. So really all you have done is pointed out the obvious. Let's put some facts and opinions down.
FACT: Ulfric is willing to die for his cause.
OPINION: He is the good guy.
FACT: Ulfric is openly racist and his political policies reflect that.
OPINION: He is a horrible person
FACT: The Empire gave into the Aldmeri Dominion
OPINION: The Empire is weak.
FACT: The Empire surrendered to survive.
OPINION: The Empire is smart and knows how to survive.
I rest my case.