A $100 lamp and a seven-figure platform do not ask for the same evidence. The person deciding is the same kind of person. The stakes are not.
Teams often add more proof when the real problem is the wrong proof. A logo wall does not help a buyer defend a large yes. A long case study does not help someone choose a simple product. Proof has to sit at the level of risk in front of them.
What counts
Useful proof is specific. It names the situation, the constraint, and the outcome. It comes from someone the buyer recognizes. And it makes the risk visible before it tries to shrink it.
If the claim is big, the proof has to be big enough to survive the meeting after the meeting. Adjectives will not do that work.