I don't think it is hard to predict who will win the matches here, to be honest. I know Zimbabwe are kind of a strong team but at the end of the day kind of let everyone down. Zimbabwe failed to qualify for the T20 when they failed to beat weak teams. I don't see any point in Sri Lanka playing with Zimbabwe while they got a World Cup coming up. They should play with someone stronger to better prepare for the World Cup.
There are more chances of Sir Lanka to win than Zimbabwe because we have seen currently the Team Zimbabwe has not going to involve more than their top batting. Recently their matches were at the stage that they have been lost in many matches from other countries. As the series will give us so much fun and that would be nice because they both have good batting now a days.