You can avoid potentially damaging criticism at your business case review if you take steps to prevent it. Expect your business case critic.
The Business Case Critic Comes With the Turf
Expect your business case critic.
No matter when or how you prepare your business case, there will be a sinister, uninvited stranger in the room when you present it for review: the business case critic. You can't bar this person from the meeting and speaking to everyone present.
Know for certain the critic will be there, working against you. This person "comes with the turf," whenever you project future business results. The critic's name is The Credibility Question. Your critic is the moving force behind questions like these: Read more of this post