Pakistan, March 7 -- Every Ferrari driver feels a heavy burden of expectation but the pressure is mounting more than ever on Sebastian Vettel as the German enters his fifth season with Formula One's most successful and glamorous team. The comparisons with great compatriot Michael Schumacher, who had to wait until his fifth year at Maranello in 2000 before ending a long title drought for the Italian constructor, are being ramped up again. Ferrari, who last won a title more than a decade ago, have sent hopes soaring with Vettel fastest in testing and Mercedes rival Lewis Hamilton suggesting the Italians could be half a second quicker. Vettel, hunting his fifth crown, was naturally wary of fuelling the hype when asked at the start of testing...