This confidence comes from the typical sub continent pitches where chasing is easier. Looks like KKR is on the verge of elimination if this match gets washed out (play already stopped) they will be out of the race.
Yeah, I saw the scorecard later. Based on the stats, Tendulkar does not look confident and wants to spend some time on the pitch. Rohit Sharma... yeah, facing 27 balls and yet a strike rate of 100 is less.
Their bowling did not had fire (apart from Malinga) to win the match.