from what i've read.. they're very close. however.. i would think the two stroke needs to spool up to get the horsepower. midrange power might suffer briefly. the four stroke can throw larger props. the tachs taken on the 200 show that it can throw an 18x8 at the same rpm as what the 1.60 thows a 16x8. the tachs also show... if you throw a 16x8 on the 200.. it gets up close to 9000rpm. 8400's with an 18x8. 1.60 plus a pitts costs 330. and weighs 32.8 without muffler. probably about 35.8ish with. the 200 weighs 30.7 with stock muffler. which seems to be very manipulative. and you get four stroke sound.. ease of use after break in. usually no needle valve adjustments etc. i'm leaning towards the 200 if i don't go with a gas.