I want to calculate the average 'ELO Change', provided that
i) The ELO Change was >0
ii) A given hero appeared in that row (e.g., D.Va)
I've managed to do it if only 1 hero appears per row, and my formula for that was:
=AVERAGEIFS(Table1[ELO Change],Table1[Hero 1], Q14, Table1[Hero 2], ""...