In some ways, he's not incorrect on this, but definitely with a twist. First, because of the shared history, the Ukrainians are quite familiar with Russian weapons, doctrine, and mentality. It makes it much easier for them to follow the old adage of know thine enemy. At the same time, they've had access to Western training, doctrine, intelligence, and, to some extent, equipment. This allows them to select the best procedures for the job at hand, or maybe even form their own based on the two systems for an optimized solution to any given circumstance. The Russians haven't had this wholesale exposure to Western equipment and ideas, so they're not as sure in any given situation what they'll be facing.
I do find interesting several of the Russian broadcasts as of late. It seems that they're prepping their citizens for either lower expectations.