Also qantas.com explicitly states children count as guests for EK lounges, unlike QF owned lounges where 2 are allowed ... which is consistent with Oneworld lounge policies. It seems QF has negotiated a special deal with EK but hasn't updated all parts of the web site yet ... with the exit of QF from DXB this will be likely to change soon, yet again.... From qantas.com:

Child Access Guide

Customers under the legal drinking age must be accompanied by an adult in any Qantas operated lounge. Legal drinking age may vary in different jurisdictions and countries. LoungeChild AgeNumber of ChildrenQantas owned and operated lounge0-3 years
4 to 17 years
18 and overNot counted as a child guest
2 not counted as guest
adult guestAmerican Airlines owned loungeUnder 18 yearsAll children are counted towards guest numbersEmirates lounge0 to 17 yearsAll children are counted towards guest numbersAssociated Lounge varies**varies**If you are travelling with more than two children, the Qantas lounge manager will try to accommodate them, subject to reviewing the space available in the lounge.