Not strange at all. The #1 page is heavily SEOd by the marketing SEO teams. The technical download pages don't have the luxury of full time SEO teams.
What exactly is the purposes of a marketing team which prevents interested users from using your products?
There is no marketing to be done at that point - the market has already found you.
Not strange at all. The #1 page is heavily SEOd by the marketing SEO teams. The technical download pages don't have the luxury of full time SEO teams.