The pressure difference above and below the wing is less important to create lift than one might think. 90% percent of the lift comes from what is called 'downwash'. Simply a deflection of the airflow. Air is accelerated downwards. Lots of air! This requires a force and already Newton now that that creates an eqally but opposing force. If one looks at the force that the pressure difference creates for a small Cessna, it is only about 1500 N (approximately 300 pounds).