There are just too many variables.
I work with natural clients and the variance in recovery ability is huge from one person to the next. I may have one person only hit 3 sets a week for chest, while another might hit 12-16sets per workout for chest. Goal differences is only part of the deal. FOCUS, TEMPO, INTENSITY, REST, SPLIT, REP RANGE, TIME UNDER TENSION, and on and on and on and on and GENES!
Personally I hit 12-15sets when one and about 8-9sets when off.