Silly question perhaps, why would you need to know how many were prevented?
People say that more puncture resistant tyres are heavier and noticeably more rolling resistance (hence some don't like them).
When I switch to Marathon Plus they were more expensive than the lower protection tyres (same brand) I have been using.
If they are ineffective one is enduring the negative impacts from using them without benefit.
If they are effective then it's a trade-off everybody can make their decision which to use.
Edit: corrected spelling of "negative"