It is the same with T.S, T.SWAT, T.Snipes, etc... You can´t search in 4s or 3s, no it has got to be pairs or alone. If you serach in 3s or more you´ll never find a game in ranked. And if you search in pairs or alone, every 3rd or 4th game you will get matched up with/against D-rankers or AFKrs or whatever, you see my point.
[Edited on 09.27.2011 4:23 PM PDT]