I disagree. I think manufacturers are to be regarded as "trusted sources". The same way as car magazines. If manufacturers can't be regarded as "trusted parties" than we cannot even publish things like engine power and torque...
Well it's kind of humorous you should mention power and torque. Some quoted power and torque figures are like 10% out and I can give examples if you like. The 570S springs to mind for instance.
Magazines are independent, manufacturers aren't, therefore they're less likely to be biased, although I do say 'less' likely. A manufacturer on the other hand has every incentive in the world to BS.
If the times are legit, no worries, independent testing will show the same thing right? So no need to include them.