You're joking right, you single out one line when clearly the additional lines in that article provide further context to what that statement meant.
2 paladins, 2 melee - if prot, judge Wisdom, Ret judges Light. If both Ret or Prot, the higher AP should judge Light.
2 paladins, 2 casters - The higher SP should judge Light, or both judge Wisdom to ensure more uptime.
3 paladins, 1 prot - Prot judges Wisdom, all others judge Light.