Djokovic 2300 points clear on the clay rankings with 0 clay titles compared to the guy with 1 slam, 2 masters 1000, 2 500 and 1 250 title.
Seems about right
Djokovic doesn't have 0 clay titles. It is obvious this ranking looks at more than the last 12 months, otherwise Nadal would not be 4th on hard. But still I agree with you it is strange Djokovic is ahead on clay. I see no sensible algorithm allowing for this result. Of half-witted ones.....