Margin Call broker is a warning system from the broker if the equity you have is not sufficient for the margin needed to hold the position .
the Stop Out is a forced closing of a trading position, because equity funds have been reduced and do not meet the margin needed to hold a position. So, the forced closure that you experience is not called the Margin Call broker
Linkback: https://www.forex.zone/forex-education/29/understanding-margin-call-mc-and-stop-out-so/1672/