I thought this comment at File 770 was interesting http://file770.com/pixel-scroll-7-28-20-we-have-pixelsign-the-likes-of-godstalk-has-never-seen/#comment-1204307
However, I realised that the Google n-gram site would provide a neat empirical confirmation of Mars bias in popular culture. I did a search on Martians and Venusians, choosing the inhabitants rather than the planets to avoid hits about astronomy or the gods.
I cut off the date at 1970 because by that point images from the Mariner probe and other data had really begun to reshape how we thought about our sister planets.
I think the deeper question is why? Venus is a lot, lot more visible than Mars. Is it precisely because of that? That we think of Venus as a star rather than a planet? Or is it some kind of weird sexism that makes manly war-like Mars more interesting than feminine Venus?
The H.G.Wells spike is very visible, so maybe it is all down to Herbert’s arbitrary choice. If he’d picked tripod’s from Venus then maybe those lines would be reversed?