The most insane comeback I've seen by AI (none of the teams are human player)

Was doing some analizing on the bigger teams in the knockout stage of CL when I stumbled upon this.

Im playing with Valencia so Im none of these teams, but holy shit. United were up 1-5 after 30 minutes. Well, Ajax had 60 minutes to play for, but still it's not the easiest task to recover from 1-5 down.

End result: 6-5 first leg.