Payload, payload, payload.........
Forget about ANY mfg. published MAX TOW RATINGS.
Those numbers are magical marketing numbers using a base model, 150# driver and 20# cargo.
REAL World.......you will run out of payload capacity or tow vehicle GVWR long before reaching those magical max tow rating.
GVWR minus curb weight minus all passengers/stuff....payload
Trailers GVWR.....use 15% for trailer tongue weight.
Is that number larger, close to, smaller than payload.
Should be smaller or close to....not larger.
Without actually weighing each for 'true weight' the above is best guesstimate for figuring 'CAN I tow this'