The best thing about Eruption is its name, I agree, it's an overrated song. Hell it's not even a song FFS, it's a show-off; "Ooh, look how well I play the guitar, I can keep this solo going for hours". A number of top guitar players can do that shit. A song must have structure, that's when a solo has that WOW effect. A good solo must be incorporated into that structure, it needs to be the climax of an actual song, not just a jamming session. I'd take the 15 second solo from Whole Lotta Love over Eruption anyday, it's more brilliant in every possible way.
I'm not trying to diss Eddie, he's a great, but Eruption is not all that.