One person is doing it right, one is doing it wring, I will let you be the judge.
Interestingly, everytime the issue of suit sans tie comes up, there is a photo of Mr. Pitt. While in the above photo the suit does maybe look a bit awkward and you might feel inclined to ask for "more cuff", there is a photo which I have seen several times in this forum, from Cannes a few years ago, with A.J. A kind of light or medium grey suit, I think it was Tom Ford. It looked great. So it is clearly possible to look great with suit sans tie.
Personally, I normally refrain from trying it. Always feel that the look is too much like if I have chosen to take my tie off when leaving my desk.
However, I often go sans tie with a sport coat.