I do think Venus is the better player.
Problem is - does she still have that burning desire to be the best player in the world?
When Hingis was still playing, it seems to me that Venus was always pumped up to do well and show who the better player was.
I guess their on-court rivalry was good and brought out the best tennis in her.
Venus at her best is better than Serena at her best IMHO, she just needs to have that burning desire again.