I was wondering the same thing, so I reached out to them via email to confirm the accuracy of this. They replied confirming a sensitivity rating of 102.6 for the 210 and 103 for the 212.Why would they need to exagerate the weight figure, given that even23lbs is already amazing for a 212?
And if you open the discussion about the weight, I'd like to talk about the sensitivity: how could the 210 have a sensitivity of 103 dB SPL, seriously? (same as for the 212 by the way)