That's the most succinct argument I've ever seen on this point. GS X-men 1 is smack dab in the middle of the bronze age. It may epitomize this period more than any other books, and the new team may be the highpoint of the era (at least for Marvel), but there's too many other books that ran throughout the entire period and, especially at the time, would have been more focused on than X-men.
As for those who say Conan wasn't that influential, you either weren't reading comics at that time or just have poor memories. Every time you turned your head, there was another Conan knock-off in another title, as a supporting character, back-up story etc. Without Conan (and I'm not a Conan fan, btw) and the character's 3 titles, there would likely be no Kull, Slayer, Howard the Duck, etc. Conan proved that not every main character had to be wearing long-johns and that fantasy, be it sword or sorcery or otherwise, and ATYPICAL heroes who weren't all good and noble (including the Punisher, Wolverine, Dracula, Werewolf by Night, Luke Cage, Ghost Rider, Son of Satan) and were motivated by self-interest could sell. This is to me the most essential difference between Conan and what preceeded it.
Paul