Hmmm, sounds like insufficient quantities of "intrinsikum" must explain why the Russians are using squadrons piecemeal in those years.
Interesting, I also note what appears to be a clash of methodology. Is this quote asserting that the French charged at the trot while the Russians used the full gallop? Given Welly's ambivalence about British cavalry, which always seemed to him to be off at the gallop in some uncontrollable fashion, perhaps Wellington was likely to share some distrust of any charge at the gallop -- nothing like exerting MORE CONTROL!
On the other hand, Fritz's cavalry seemed to have demonstrated the efficacy of a full gallop charge :o)
Meanwhile, I shall ascribe lack of Russian massed cavalry usage to a need for more...intrinsikum :o)
Thanks - Howie