I dunno. We do a lot of kenjutsu in my dojo - which is good because I am very, very drawn to kenjutsu and my only other option to augment my training would be to travel nearly 300km one way trip to train in Tenshin Shoden Katori Shinto Ryu (I noticed some people break the words up differently, but this was how the instructor wrote it) which although I'd like to do is not currently an option. We do sword vs sword stuff (with bokken mostly although on occasion I have had to face down shinken in very slow controlled kata in order to help remove the mental blocks which would pop up under the circumstances) as well as solo kata. I can't comment on comparisons to other ryuha as I have not had enough experience in anything else however I can say that what we are taught seems to hold water with things I hear - even things such as cutting relying on "tip speed" and havin clean cuts with tameshigiri, rather than fishtails from bearing down with the forearm or trying to put "power" into cuts. I also noticed a few things some other stuff I have seen doesn't appear to have (although I view only as an outsider with the other things bear in mind) such as the left pinky finger positioning and a phenomena I could only really describe as "flow" moving through evasion through cut through defense through whatever it needs to be. I'd hazard that most other systems would have these things, mind, although from where I've been I've either not seen them, or not known enough about how they do it to have noticed! So another long winded space cadet post from Indagator... my .02 summed up though, no harm in augmenting with other sword systems if it's available however there is a lot more to the Bujinkan and to Soke than what is shown publicly on the internet! My dojo has nothing publicly available aside from a minor website listing info you could get anywhere on the web. That being said, we do have our resources!