I am not a fan of either Green Lantern or Spiderman, so there is no particular nostalgia angle for me on this comparison.
I would summarise as follows: without context, I like the ASM cover better: more complex layout, tilted angles, more drama, more understandable situation.
With context, I understand why the GL cover has more significance, but you really need to have the full picture to understand it fully, including the meta-textual message.
So if I were the curator of a museum, I would go for the GL cover.
For my home, if I were rich and could afford either, I would go for the ASM cover, for me it is just nicer to look at, that is all!
Carlo