The customer testimonial format has a trust problem in 2026, and the data shows it. A 2025 survey of 811 B2B buyers, sellers, and marketers found that 64% trust named testimonials and 60% trust blind-but-verified ones. But the same research found that 51% rank statistical evidence as the most trustworthy type of customer proof, while 40% report they don't see this type of evidence from vendors at all.