Coffeine....you coining a new word?
I just looked for some of the info on pressure claims as when I bought the Aeropress but not finding what I want very easily...but think the air pressure should be in line with more than 3 bar. I wouldn't expect much pressure from a typical french press (I have several) but the Aeropress works similarly but is easier to clean in any case. You can alter pressure and drip time to customize your drink. Still the winner in this area....
ps Found this on the pressure created in the faq for the AeroPress:
The AeroPress filter is 2.5 inches in diameter so the area of the filter is 4.9 square inches. If you press down firmly on a scale, it is relatively easy to get the scale up to 25 pounds and then if you press hard on the scale, you can certainly get it up to 50 pounds. Therefore if you press similarly hard on your AeroPress while brewing coffee, the firm pressing will be at 5.1 psi (25 lbs/4.9 sq in) and the harder pressing will be at 10.2 psi (50 lbs/4.9 sq in). Since a bar of pressure is 14.7 psi, the former is .35 bar and the latter is .70 bar. We have done taste comparisons between minimal and maximum pressure on an AeroPress and our taste buds can’t tell the difference.