maybe it's easier to illustrate by comparing it to another engine type - different nozzles and all.
- RB211 524 - 1.58ish EPR - 50-60k lbs thrust
- Trent 500 - 1.4ish EPR - 53k lbs thrust
- JT8 - 2ish EPR - 20k ish lbs thrust
SAME EPR RATIO - NOT NECESSARILY SAME THRUST
- Ferrari - 100mph = 2,000rpm/400bhp
- Mini Cooper - 100mph = 3,500rpm/150bhp
SAME SPEED - NOT NECESSARILY SAME POWER