When you are in a 109 and you see an enemy fighter either co-alt, or above you just Think Blenheim. If you were not in a fighter (which you really aren't in this game because the 109 is an interceptor more than a fighter, I.E. good high speed performance and big guns(E-3, E-4). What would you do if you were in a Blenheim? Pray and hope he doesn't see you. Don't think you'll out run him or out turn him. Maybe if he's below you you can fly into the sun and hope he can't get a shot. You could head straight for the ground in a hope that he will accidently kill his motor. You could also try to fly nice and level and hope he doesn't do to much damage or at least you'll die faster so you can respawn and fly again.
P.S. I would do like they did in the pearl harbor movie and just fly really close to the ground and try to get him to crash into something