I think the lesson to be learned here is that Tesla needs to under promise. I could have told them that back in 1999, when I got a free new polished intake manifold and free flow exhaust for my 1999 Mustang Cobra as part of a recall because it didn't make the advertised performance, even though the difference with and without was negligible.
Take a car, lets say it can do 0-60 in 3.2 reliably. Some builds might do 3.0, almost all do 3.2, and a few low performers do 3.4. Advertise it as 3.0 or 3.4 0-60, and I bet sales are pretty much the same. The only difference is, if you advertise 3.0, everyone is pissed off calling for recalls, advertise 3.4 and everyone is super happy as most are faster than advertised.
Hopefully Tesla learns.