There is no need to profile page , because cComemnt is integrated to 3rd party extensions like Kunena , etc .
Something like below picture ;
First there is a link to pop up windows with some information about user ... number of comments , link to profiles , and most important link to last comments ( or all comments )
then click on user's name , after that click on Last Comments
It is very nice way to show users some information about others .
I didn't see this function in Joomla! comments system .
cComment can be the first