Hi Daniel

When u look at a scenario, on my opinion, consider these factors :

-numbers of planes : generally side with more planes got an initial advantage. Tactically at least
-quality of planes : planes with lower fuel, 4 on tail, or 6 on engine are "weaker".
Low on fuel I intend Fokker DrI and DVII, but the wort are planes with 4 on tail : a single R on tail can kill u. Engine value 6 planes are more nimble than engine 8, but avoid frontal fire
-Armament : planes with single gun make less damage, so u got to track your foe lots of time to kill it, luck apart. Consider it.
-Nieuport 17 : 1 gun, 4 on tail and really weak on wings, plus slow. Think twice before join a battle with this lovely flying grave

When join a scenario, u can calculate the "guns factor" Add guns number of a side and add this side tail points (x). Do the same for the other side (y). (x/y)/2 *100 = chance of win the scenario for A side

B side got the remanent

I said "win the scenario" , not kill all enemy

Good luck