Career pilot plane assiggments based on mission?

[J2_Trupobaw]

When flying a mixed Mig-3 / I-16 squadron (one of air defence units in Tushino) I am always assigned Mig for low-altitude, strafing or cover missions, and always given the I-16 for high altitude interception. If there is a prioritising algotithm giving player the plane based on mission, it seems to be treating I-16 as "heavy" fighter and send it after the bombers, and treat Mig as "superiority/low altitude" fighter. Perhaps it's based on armament? Anyway, after two stages of campaign I never flied these planes up to their historical strengths (Mig as interceptor, Ishak low and slow), always opposite. Perhaps this can be adjusted?