What your image implies:
That if you hold down SHFT and CMD and then click with 3 fingers, then bettertouchtool should interpret it as the "W" key. Weird, eh?
You probably meant that if you click with 3 fingers, then BTT should interpret it as "SHFT CMD W" --- if so you should remove the checkmarks for SHFT and CMD and then where you have "W", instead punch in SHFT CMD W.
Jose