I am assuming the 2nd choice - Kick shot and make it, equals the difficulty of the jump shot with the object ball in the middle of the table, not hanging in the pocket.
I would say that this really depends on the specific shot. There are kicks that I expect to make 50% of the time, I'm disappointed when I miss by more than 1/4 diamond. Others I'm real happy to hit the OB anywhere. There are some multi-rail kicks with caroms at the end where the carom makes the allowable error quite large, these too should be made by proficient kickers. Others will be very difficult. I would rank that two-rail "Z" kick the Efren makes (a link to the video has been recently posted) is an outstanding shot, given that it covers the entire length of the table. Two rail "Z" shots that cover 1 diamond are much easier.
So, after all that bs, I could not find the 'it depends' button and therefore could not vote.