Mark 14:4 gives the parallel account of the same indignation: "Why this waste of perfume?" — identical complaint from the disciples.

John 12:4-6 identifies Judas as the complainer and reveals his thieving motive — deepening the disciples' hypocrisy.

John 12:5 quotes the complaint about selling the perfume for the poor — direct parallel to the disciples' indignation in Matthew.