From what i know, any counter weapon will auto target enemy projectiles if it is in range and if there is not overwhelming numbers of projectiles and ''protect'' the unit without countermeasures.

Joining. Starchasm_nyx _ (highest is 1900 3v3 1700 everything ells) + Lord_of_Ashes (highest 1500 global and 3v3 1500 1v1 2v2 4v4 is 1000).