This is a very nuanced issue that has been discussed at length several times in the past. And each new game has its own complexities in gameplay and rankings that make for an interesting twist on the discussion.
Here's another thread from after 2011:
http://www.chiefdelphi.com/forums/sh...ad.php?t=94916
While many will agree that throwing a match is undesirable, how to define "throwing a match" becomes unclear when actually examined. Should event strategy outrank match strategy? Does employing a sub-optimal match strategy count as throwing a match? Does avoiding strategic "dirty" play count as not employing the optimal match strategy?