There are terminological subtleties at work here. When a Republican minority insists on extended debate and refuses to permit a vote, it is "filibustering" and "obstructionist." When a democrat minority refuses to permit a vote, the press merely asserts that it takes 60 votes to pass a bill.
So, the recent vote on Keystone XL was not a vote on the Bill, itself, but a vote on cloture? IOW, the Bill is still “live” and could be voted on if they find one more vote?