Diego Simeone deflected concern from a 4-0 hiding into praise for a rampant Borussia Dortmund side that inflicted his heaviest defeat with Atletico Madrid.
A young and vibrant Dortmund scored three times in the final 20 minutes to tear a hole through their Champions League opponents and go three points clear in Group A.
Axel Witsel's deflected effort earlier split the teams at the interval before two-goal Raphael Guerreiro and fellow substitute Jadon Sancho combined to ruthlessly expose Atleti's desperation for an equaliser.
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Atletico did look likely to square the margin during a dominant spell after the restart but they failed capitalise on that period as Simeone lauded Dortmund.