Dave, similar forces but not necessarily the same. Consider the aerodynamic influences of wing tip changes, and the 'MCAS issues' of thrust, engine cowl and wing-pylon interface.
Whilst there should not be any mechanical increase, small but significant changes can arise from revised cable runs and pulleys, pressure bulkhead seals, etc.
If the NG was marginally acceptable, then a small change in the Max might not meet the certification requirements.