I watch some episodes from the beginning and i noticed that when sasuke figth lee he isn't able to see lee or read his movements even with his sharingan activated. And at that time lee was wearing his weights. But when sasuke figths orochimaru in the forrest of death(or something) sasuke is able to see and read oro's movements. And sence the sharingan is able to read movements and see fast moving people. I have then concluded that lee is faster then oro with his weights on. I based this on that sasuke was able to see and read oro's movements but not lee's.
If anyone have any reason why i'm wrong or somebody has a diffrent meaning, please let me know.