I saw a similar very large (wall sized) painting of a P38 taking out a Jap Zero or Zeke in the house of a retired Chinese Air Force pilot. He was very proud that he shot down two Jap planes in one day.
For history buffs, I once found an After Action Summary interview of one of our WW2 P38 pilots who helped devise the turning tactics for that plane to match and outfly pursuing Japanese aircraft. It was all in getting enough power (which the P38 had), climbing in tight turns, and then flipping out and coming in behind the slower climbing enemy.
These might be in Record Group 72, Navy Bureau of Aeronautics records or RG 18, Army Air Force. There is quite a collection of these AARs.