Two films showing the same collision from each player's point of view, superimposed.

Pics from the film: First the moment of collision from the Jug (lead plane)

Same moment from the chasing P-51's point of view

Only the Pony took damage. The "both should go down" model would damage the Jug even though there never was any collision on the Jug driver's screen, as you can see in the pics and the film.