my post stated that proper rows with a full range of motion, pulled from the floor while maintaining 90 degrees was the best. and if the guy is a pencil neck he can do all the rear lateral raises in the world and still see dick for results... if he cant row for shit and in 6 months he can row 100-150 pounds more than he can today his rear delts will be just fine.
isolation advice for the novice (jooser or otherwise) is counter-productive.