Apologies for reviving a dead thread, but I found this essay disputing and refuting many of the claims in that video with detailed sources and references. Here is the original post, which is split into 5 parts and here is the entire essay in one place.
It's a long read, about 30,000 words, but it is very detailed and does seem to show that the original video contained quite a number of misconceptions even when it tried to debunk other misconceptions. I think it's an interesting read for anyone interested in WW2 tanks, even outside of the context of it being a rebuttal to the video as the essay draws upon the analysis of multiple respected historians such as Zaloga, Michulec, Glantz and others, which @Erwin might be interested in.