I flew the G model BUFFs. They had J57 TurboWASP, water injection engines. Every flight we'd do an engine monitor check. Set the thrust to a certain RPM, record the parameters. One of the parameters we measured was throttle stagger. If it was more than a knob width difference it was written up.
When hand flying the BUFF, you just line em up. If there was any stagger, you just ignored it and trimmed up the rudder. Throttles 4 and 5 stick up higher than the rest, and some guys would set their power and fly 4 and 5 for small power changes, like air refueling and ILS's.