1) Vendor-published metrics (not independently audited)
The outcomes in vendor case studies are reported by the vendor and are not accompanied by independent audits in the public materials reviewed. Key methodological details are often not disclosed, including baseline periods, seasonality controls, traffic mix changes, and definitions of conversion events.
2) Missing details for buyer evaluation
Public case study summaries typically do not provide implementation timelines by customer, per-qualified-lead cost data, operational constraints (such as handoff rates to human agents), or error rates (for example, mis-qualification metrics).
3) Interpreting reported results
Reported outcomes may be plausible in markets where WhatsApp response speed materially influences conversion, but those outcomes may not generalize to long sales-cycle enterprise use cases or regions where WhatsApp is not the primary channel.