Which one is more reliable? There are 1000s that I cannot solve, and 1500s and even 2000s I can easily solve. I used to think that ratings was the measure of skill, but recently it seems that looking at the number of correct submissions for problems is proving a better measure for me. Am I mistaken that a 1000 rated person should be able to solve all 1000s? I am now ranking myself based on submission number now, and it has proven far more useful in searching for problems my level. What do you guys think?