Seems fine on my cavalry alt using a champion destrier and 7 riding. I think people way over-relied on excess speed instead of skillful lancing and maneuvering and it will just take them a little while to adjust, just get a little more riding skill and convert more points for an extra point in powerstrike and you are good to go. More balanced, less easy mode.
Don't worry about strategus anyway, based on new gold system no one will be buying horses for weeks to come.