IMO the top spot should have a high minimum. 1st place is (nearly) always a PITA to get (no easy ones below 20 cores). Then we can let the points drop faster instead, if there are just like 10 people fighting, then #1 still gets 50p or so, but 5th place won't get too much (maybe 50-35-25-15-10 is a good way to distribute points).
I've been battling these type of low-popularity rankings for a few years... the top scores are top scores for a reason, not just because someone bothered benching his CPU while watching a sitcom. Top 5 is usually quite easy, but that's it. Then again, getting 15-20 points in the more popular rankings is also a walk in the park these days.