You hold the rusty swords I swing the Excalibur
His contemporaries' (in this case Canibus) only lyrical weapons are rusty swords. In other words, their lines are wack. Cool J on the other hand, lyrically wields excalibur. Therefore, his lines are infinitely better.
To help improve the meaning of these lyrics, visit “4, 3, 2, 1” by LL Cool J (Ft. Canibus, DMX, Method Man & Redman) Lyrics and leave a comment on the lyrics box