Yep. Whereas 3E is supported by online documents. As a 4E player and DM, I've done more searches for 3E than for 4E... for the purpose of showing off the differences and flaws of 3E.
Same here. I do a lot more searching for older editions. I already know 4E.
The D&D vs. Pathfinder comparison is pretty deeply flawed, because it excludes any searches for D&D that don't include an edition. For example:
Insight search shows that D&D, dnd, "Dungeons and Dragons", and "Dungeons Dragons" all, individually, dwarf Pathfinder in the RPG category.