Yeah but the FZ6 was originally the R6 which means it has potential...Really though the parallell twin Ninja has only 65 ponies and 44 ft lbs of torque, whereas the FZ has 90 hp and 43 ft lbs...I know the power delivery characteristics are different but I think the FZ6R wins the engine wars hands down.
Then the 180 sized rear tire vs the 160 rear on the Ninja, styling is subjective, the aftermarket will cure the exhaust on both, ergonomics being almost identical with the FZ6R having remotely better passenger accomadations.
the price diff is only $200, I know which one I am riding away.