Comment by GravityLab

The correct PR is the one that solves the problem the best. The correct PR's size has nothing to do with the # of lines it is. Tracking time to merge is not that meaningful because merging code does not in itself say anything about the value of that code in production. That is the type of metric that may become a target for a scrum master or project manager despite it being fairly divorced from the reality of moving the right code into the production environment.