I am not him, so I can only surmise that he hasn't gotten to it yet.
In any case, his statement is completely factual, because it is based on what he has tested to that point.
Look at it this way, since you want to use cars. Maybe you test a mclaren out, and declare it the fastest car you've driven. There is nothing wrong with that statement.
Maybe you know you will be testing a bugatti in 6 months, but just because it reportedly is faster doesn't make it so in your book until it is tested by you, to your standards which you apply exactingly to every car. It has to prove it's faster to change your statement which is based on firsthand experience and testing. Maybe it will, maybe it won't.