Rotary engines are by definition 2-cycle engines, so to compare displacement in a rotary with a 4-cycle engine you must double the rotary's displacement, so the 238bhp in the 1.5L RX-8 being compares to the ~230bhp of the EG33 is not 1.5L vs. 3.3L, it's actually 3.0L vs. 3.3L.

Or something to that affect.