On Marques' channel he mainly reviews mobile phones and other gadgets of a similar nature. He is really creating content around the experience of using a item and less about the hardware or software within it. For this reason he's probably more or a 'product reviewer' than a 'tech reviewer'.
Wendell is very knowledgeable and meticulous when reviewing technology. Often he will go into detail related to hardware and software that would be beyond the expertise of other reviewers.
Wendell provides honest and objective reviews, Normally he explain in detail about the best use-cases, price to performance ratio, and software utilization of a product. This is clearly done to support his viewers in choosing the right technology for their needs.