The actual OCZ Throttle speed review was done here, but I think they only tested it with the USB connection. Either way, i doubt even esata actually achieves those speeds.
If they're going to test a Flash Drive then they should test all it's interfaces, especially since eSATA is getting to be rather common these days.
BTW, USB performance as I recently discovered upon a visit to a friends place, seems to be mainly a function of the chipset used.
For my external 2.5" HDD I can consistently get 20MB/s writing and around 25-30MB/s reading on my current ATI based board and my previous ULi based board.
One of my friends PCs consistently produced 50-60MB/s reading and 40MB/s writing, pretty much double what I could previously get, and it's motherboard was an old nForce3-250 based SKT939.
Just goes to show I should never have got rid of my old nForce3-250 board. I'll have to try it with one of my Flash drives next time.
Anyway, the point is unless you know what manufacturers' use to get their "figures" and what the reviewers use to get their "figures" then who's to say the manufacturers' figures are incorrect?
And yes, I know in the link you reference they specify the motherboard but quite a lot don't.