I am not sure of many things in this game except for 2:
1) 4-5-1V do not BEAT but DESTROYS 4-4-2 (at similar level). I am in a >40 victories run.
2) the only better record I have is with 3N-1-3N-2WAM-1 against 4-4-3 with which you can beat easily teams one star above yours