Ironically, I think it's the other way around.
This is the one event where I can say that Marvel heroes are better characters.
I'm not talking about the pastiche of the "Great Society". They were obvious copies, but Sun God truly stood for what Superman would stand for. He did or said nothing that Supes wouldn't.
The Justice League often goes into these "End of the World" type scenarios with nothing but hope and good intentions.
There have been multiple times Superman has shot down ideas and said "No! We will find another way!".
The whole Incursion arc was about how sometimes there isn't another way. Sometimes it's them or us.
Having the Marvel heroes suffer made for a great story.
Though, I would have preferred Reed to do have done the genociding, not Namor. Everyone knows Namor would do it.
But Reed? He would do it and hate himself forever.
Great storytelling comes from when you make your characters suffer the most.