How can you justify adding and subtracting like that? Dickey should have had 25 wins had it not been for offense and BP. It's also highly possible that Harvey posts an ERA of 2.75 and still only wins 8-9 games.
It doesn't work like that, you can't just add or subtract runs just based on hypothetical scenarios. If Wright or Ike get injured for any period of time, we might not be able to score 600 runs.
Basing on history, Johan will probably get injured and that will propel Harvey as the #1 starter where he will be pitching against #1 starters of other team. Just there, he will be at a disadvantage.
Overall, the few guys on the team have potential, but as the team stands right now, you have to delusional to think that it's AT LEAST a .500 team. I would love to see that, but I can't put blinders and be objective about it.