Is that really any different from:
- Fuel consumption for cars. I regularly read Car mag, and their test cars are typically achieving 1/3rd less than the manufacturers claims
- Actual contrast ratios for LCD/Plasma TVs. I believe that they're measured with the screen off, WTF
- Network speeds over a LAN. Get yourself a 100Mb switch and then see what you really get
We live in a world full of overestimates.