There is no connection. I am an avid Strava user in the Bay Area. There are SO MANY cyclists here it's ridiculous. I am pretty consistently in the top 1-10% on Strava segments (handfull of top 10's on segments with 4,000+ riders). I would consider myself an above average cyclist as far as fitness goes, at best. For every person lower than me on a Strava leader board, there are 10 others that don't use Strava that would drop my ass without a second thought.