That would seem to imply you've gotten a lot better at move optimization since then - if your average FMC solution (where you got to try multiple times for the best solution) was 52, you'd think your average then for a regular solve must have been more like 55 to 60.
And in my experience, faster solvers, since they have more algs to choose from on a speedsolve, tend to actually increase the move count slightly, since they often use speed-optimal algs instead of move-optimal algs. I remember that in my first few years, I actually used move-optimal T perm, U perm, E perm, which made me much slower, but gave me a better move count than I have today.
I'm thinking this survey may not have a lot of value if people don't actually do an average and specifically count - I suspect people's estimates are often very far off. I know I actually expected less than 59 for myself, but I didn't get that. The moves just pile up so fast when you're doing OLL/PLL.