Those who can't sail will fall to any size ship.
Main goal on Cerb is not to let Cutter get close, so grab long guns and keep distance. If cutter is on your ass, get distance, flip fire, get distance, flip fire.... one side chain another side ball. You have x3 sail value or more.. he can't stop you. He flips, you flip and fire..all done with manual sailing. Don't rush and place each shot accurately. Flipping through the wind can be another trick and will force enemy to do the same or flip opposite side that will expose him and improve range.
Tip - bigger ship - smaller (long) guns,
Benefits - fast reload, accuracy on long ranges.
If you are trying to duel cutter in close range on larger ship - you are dead.