T20 World Cup is in the subcontinent, and its very unpredictable. So cant say, but dont see them winning as of now. Wont be surprised if Dhoni retires from international cricket after the T20 World Cup in any case..win or loose.
Amla has slowed but still is on track, hence shows how much ahead he was earlier. But again, doesnt matter as he is likely to retire atleast from shorter formats a bit early.
Speaking of runs records, Alistair Cook too has hit a roadblock, he is surviving because of the odd easy series against the sub continent teams & pitches, otherwise he looked (still looks) to get the highest runs records in Tests beating Sachin.