Recent reports from many reviewers have generated suspicion about ATI performance in three applications and have even gone so far as to suggest that the Canadian graphics firm may be using dodgy means in order to gain speed. ATI immediately responded, claiming that these reports are not only unfounded but that some, let's say, major rival is still taking stabs at them. The stories concern Unreal Tournament 2003, Halo the DX9 PC port and the Aquamark 3 DX9 benchmark. In a statement to the inquir…