The pure land is common with Rokudo in the sense of a place where the dead are destined to go, but it is a completely different notion from the world-view under the philosophy of Rokudo-rinne.
浄土は死後に行き着くと言う点では六道と共通するものの、六道輪廻の思想で説かれる世界観とは基本的に別物である。