New Extreme 64GB (SDCZ80-064G-G46) is only 62GB ???

I doesn’t explaine why 2 customers have received 2 different products :

See my stick (You clearly see it’s not 64GB (not talking about 58.3Go):

And see other customer stick, here you see it’s 64GB (59.6Go);

When it’s advertised 64Gb and you received 62, when it’s advertised 245MB/s and you get 195, when you order the best 64GB key of the world and you don’t receive what you expected, there is something wrong.

Seems that Sandisk is selling 2 different products under the same reference.