Half the time with same amount of bugs? I consider low bug-count as part of the requirement for "predictability", since a buggy product isn't considered finish

Half the time with same amount of bugs? I consider low bug-count as part of the requirement for "predictability", since a buggy product isn't considered finished. If you're talking about someone who consistently hits their deadlines with a low bug count, vs someone who gets it done in 1/3 of the time, but 1.5x as many bugs, I would prefer the person with the longer but more predictable times. As well, if the entire team is targeting 6 weeks, and the unpredictable person finishes their task in 3 weeks, then it means that the entire schedule gets out of joint. I would prefer the person had better insight into the task and say it would take 3-4 weeks, so that other work could be properly scheduled.