What are you going on when you say rated over? Two strokes will almost always outrun a four stroke and 3 of the four motors in the test were two strokes. Honda and Yami were 4's. I'll guarnatee the Yami will cost less to run and is much quieter. It all depends on your desires, do you want hole shot and speed or reliablility and low maintenance. In this day and age I think the four stroke would always be the best choice. No hassles start it and go.