Murray has not just played him in finals.He has played 10 grand slam finals and lost 8.Nuff said.
He's 0-3 against Federer and 2-5 against Djokovic in grand slam FINALS. But there is no shame in losing to 2 of the worlds greatest players of all time and it certainly doesn't make him a bottler. What is your definition of a bottler? Because it seems to be someone who loses the big games, regardless of how and who he is playing.