The following excerpt comes from the September, 1975 edition of Airpower magazine.
By the spring of 1944 all our 109s and 190s were heavily armored. With the introduction of wing cannon in the 109, our old fighter became a truck. I refused to fly it with the additional 20mm cannon slung in pods under the wing. The extra guns were good against bombers, but grreatly hampered lateral control, cut speed significantly and because of the high loads encountered, often jammed. Worst of all, when we met escorting fighters of any kind, and P-51 Mustangs in particular, we were at a mortal disadvantage. It was worth your life to be caught flying a 109 with wing cannon against a Mustang and most of the pilots in my squadron elected to stick with the 109G-6 with its two 13mm cowl guns and a single MG 151 20mm cannon firing through the propeller hub.
In mid 1944, we were offered the FW-190. It was a good aircraft and they had beefed it up with a great deal of armor plate. Some carried their 20mm cannon (four of them) in underwing trays, while others were fitted with larger 30mm types in big gondolas, outboard of their 20mm weapons. Because of their armament, these aircraft were to be used to attack the bombers while we took on the escorts.
Personally, I preferred the older 109. The FW-190 was easy to fly. Visibility was good and the wide gear made taking off and landing far more pleasant than in the 109. The cockpit was roomy and comfortable. Control layout was better than in the 109 and the whole aircraft was less cramped. The 190 also had little sophisticated touches, such as electric trim tabs. It was light on the controls, and it could really turn, much better than the 109. This was one quality which the 190 was not given proper credit for. It could also flip over very quickly and dive, and its top speed was faster than that of the 109. Although later variants were much improved, at altitude, above 25,000 ft. the 190's performance fell off sharply and the 109 was the superior fighter.
Enjoy the read. More to come later.
Regards, Shuckins