shen
Senior Member
Su-33KUB also has side by side seating, however according to what i read, the duckbill radome does indeed reduce RCS, it is not a stealth fighter, true, but it has reduced RCS, plus it offers extra fuselage lift with the duckbill radome.
Su-34 also has better forward visibility than Su-33KUB
so much of the redesign work was already completed for the carrier trainer. i guess that makes more sense.