We won't know that until we give him a chance at this level. Hader most commonly had 5+ inning starts in the minors that many are referencing and he only threw 80-85 pitches in those starts, if given 100 pitches to work with he'd likely go 6+...which is plenty. There will absolutely be times that Hader and Woodruff have shorter starts(also will be times that Anderson/Davies have shorter starts), that's why we'll likely have an 8 man bullpen. Minor league teams do not have as much ability to work a pitch count like Hader can be worked, though. Also, minor league teams could have lefties in the lineup because they're trying to develop them. Major league teams will stack the lineups with righties. Also, a guy that doesn't have varied stuff like Hader could get hit even harder the 2nd/3rd time around as CHL said. I'm not necessarily arguing with you, but you are using hypotheticals to make your argument. He might get hit harder a 2nd time through the lineup. He could face less lefties in the big leagues, etc. If Andrew Miller is his calling, then great. Glad to have him on the roster. He also could be Chris Sale. Probably worth finding out?