Nick Mallett's post-mortem on the Perth defeat cuts through the 'equal depth' narrative that's surrounded Erasmus's rotation policy. His core point: the 13-change lineup wasn't a true Test XV, and pretending otherwise ignores the reality that Ox Nche, Malcolm Marx, and Eben Etzebeth sit in a tier of their own. Mallett frames the loss as a foreseeable consequence of selecting against a Wallabies side that had game rhythm, a new-coach bounce, and genuine motivation — while acknowledging South Africa does have a strong 35-man pool. On Australia, he's more measured: impressed by their cohesion, but flags their last-20-minutes discipline as the kind of pattern that gets punished at a World Cup. The piece is worth reading for Mallett's blunt calibration of exactly where the Boks' depth genuinely holds up — and where it doesn't.