Think I have read the same article.
and notice in all catalyst plataforms, (as a generic feature, nor ios dependent) there are four egress queues servicing by default wrr in each one.
you can also configure dont remeber if it is the third of the fourth one as a priority queue, tail droping queues 1,2 and 4 and servicing inmediately all assigned traffic to the third queue.
In the article it says, "it is a default feature", so I think it works for all catalyst devices.
