I presently fly B737 Classic's and their knackered old auto-throttle's & MEC's are constantly struggling to match the thrust between each engine. Takeoff using the auto-throttle TOGA mode is particularly good fun, requiring that one dance (albeit without the associated tights or poofery) like Rudolf Nureyev on the rudder pedals whilst the auto-throttle & MEC try to get their collective act together (accordingly we now set takeoff thrust manually / auto-throttle 'off', as it's less problematic)... along with cruise and approach offering similar opportunities to substantially mismatch the thrust levers in order to balance the thrust. But, all in all, it's no big deal and is a problem that's easily dealt with by any pilot whom is competent on multi-engined aircraft (wherein, for our lot, autopilot / auto-throttle / flight-director dependent children of the magenta line need not apply).
Last edited by Old King Coal; 18th Jan 2021 at 08:52.