It doesn't make a whole lot of sense to me to compare one extreme evil to another, but I'll have a go at it.
When I think of Nazis I feel more revulsion than I do of Muslims, maybe it's because I think that the Nazis had the capacity to know better and more deliberately chose to be extremely evil, and to throw off all pretensions of civilization to reach an even deeper level of depravity.
Muslims are by and large already a bunch of tribal savages and even though what they do is extremely evil too, it doesn't reek of the same level of ultimate depravity that someone who knows what modern civilization is and chooses evil anyway does.
When I think of Nazis I think of forced surgeries on strapped down, alive and screaming human beings, twins having unspeakable experiments done to them, people climbing over each other to escape gas chambers and dying anyway, slow deaths from starvation and disease, families being separated, some to be worked to death, others to be murdered outright, etc. I think of babies and children considered unfit being murdered while their parents are told they died of pneumonia. I think of women and men being forcibly sterlized, some of them dying because of the unecessary and cruel surgeries. I think of the horrible scars left in the minds of survivors.
All of this is almost too horrible for the human mind to comprehend. I can't understand why this wasn't stopped sooner; how those who could have acted to prevent it did nothing.
It's true that Muslims also torture and murder people. They have zero regard for human life, even those of their own people, sending them to commit suicide attacks against their most hated enemies.
There is something empty behind their eyes, as if they are just wild animals following the law of the jungle. They murder those they see as rivals and take their lands, kill or dominate other people, etc. They don't care about those they murder or the grieving families of those they murder. One of the most horrific things is how they try to portray themselves, while they are doing all this, as if they are a religion of peace. Not only do they do this, but the stupid Western world buys into it! At least Americans knew that the Nazis were their enemy!
So I suppose in the end both are equally evil, but both repulse me more in different ways.