Tough to say and that is why you gotta trust the Brewers coaching staff & front office who have way more data in terms of every aspect of comparing the two, including and especially health information, MRI's, spin rate data, recovery data in between outings, etc all kinds of things that we fans have no clue about Past results do not insure future predictions. Nelson has not had much sustained success prior to this season, has he? But neither has Anderson, really. In 2015/2016 their production was relatively similar, but Nelson had a much higher WHIP in 2016. In 2017 Anderson has been better. I would want Anderson pitching in a 2017 Wild Card game for sure I'm glad we have both in 2018, 2019 & 2020, and I'm very optimistic about Woodruff as well.... future is looking brighter