Sentence:  No longer is the best picture going to be a <WSD>toss-up</WSD> between that troika of national-historical heavies: Argo, Lincoln and Zero Dark Thirty. Instead, a warm welcome back for Life of Pi, widely dismissed by many as "this year's Hugo" but this column's dark-horse pick from October. 
Meaning of the word marked with <WSD> tags:  Either of two outcomes that are equally likely.