seems a little low
Try quantifying it, you'll feel better. Back of an envelope approximation:
Say we have an engine with a fan diameter of 5 feet. Thats a radius of 30 inches.
pi R squared for the fan area gives about 2,800 square inches.
Atmospheric pressure at sea level 14.7 psi. EPR of 1.85 means the prssure differential is 14.7 *.85 = 12.5 psi.
Pressure x Area = Force = 12.5 * 2,800 = 35,000 lbs of thrust.
Pretty fair?