you are quite right: that other page should be deleted also. There's many such articles in WP, left over from when our standards were lower. It is particularly important that we remove them so they don't serve as models.  There are many different ways to write low quality promotional pages about non-notable companies: in your case, the article was primarily a list of clients. That goes on your website, not in an encyclopedia.  I'd be very glad to be notified of similar articles. 
By the way, are you aware of our Terms of Use, particularly with respect to  paid contributions without disclosure     ? '''''' ( talk )