Opinions are ubiquitous.
He says, for instance, "this is a really heavy duty cord," but does not note the AWG of the cord. As he is noting it's generous length as well as it serving both the vac motor as well as the tool's motor.
He mentions HP ratings while ignoring the amperage ratings.
He talks about "this thing still has 'full suction' on it" without every testing the vacuum of any of them.
For a comparison of this to objective reviews take a look at Project Farm. PF's annoying voice and fast pace is worth getting past for the charts and graphs comparing apples to apples objectively.