It depends on how the tournament was done. Computers playing chess do not win 100% of the time. The top levels of the GM's can play reasonable against them. Computers playing chess have not yet become the checkers program Chinook, which is proclaimed unbeatable by experts (At the best, you can draw it).
Do you think computers should be allowed to play in chess tournaments with people? Would you play in such events yourself? My own opinion is that they shouldnt be allowed and I would not play in any tournament that allows them to play.