I flew for years with a mouse, and was pretty damn good with it. I could load and unload G with such precision I was accused of cheating more than once, though the lack of easy rudder and throttle control were a bit of a drawback. I now fly with a G-940 and love it - the FFB adds a lot. I'm sorry Logitech discontinued it, it had a few teething issues, but was a solid product and a few tweaks would have made it unbeatable. It cost about $200 new.
However it isn't the plane, it's the pilot. Hardware is nice, and it helps, but it isn't skill. When someone slices your La-7 out of the air with a Mosquito, it isn't because they've got a snazzier throttle than you.