People hear what they want to hear in Pres. Obama's comments on whether the Keystone pipeline merits U.S. approval. Opponents seem excited, but TransCanada (TRP +0.6%) claims it's also pleased since reviews of the project repeatedly have found Obama's carbon-neutral criteria are satisfied. The truth likely is somewhere in the middle; "It's politics," an analyst says. "He didn't say no, he didn't say yes."