It's all nonsense. There is no evidence to prove the hashrate and power consumption.
This.
There are at least 3, maybe 4 independent FPGA devs in this post who are backing up the numbers of the original posts as reasonable or similar to our own. You may be fair to say you havent personally witnessed the evidence, but it is silly to insinuate that because you dont know how to develop for FPGAs the performance is nonsense is a bit of a stretch.
At the end of the day mining is a competition, and most of us truly competing are not going to show our hands just to satisfy pundits.