The Bujinkan dojo ninpo, as taught outside Japan, will usually draw a raised eyebrow from other traditional Japanese ryu--ninjutsu, kenjutsu, iai-do, or otherwise. I take with a grain of salt any technique that bears the ninjutsu label; this is from experience with experienced instructors from Japan. As evidenced by the April issue of Black Belt, a Bujinkan 'black belt'is now available via video correspondence-course.
Assuming that the Bujinkan ninpo is directly related to traditional ninjutsu training, the footwork differs greatly from traditional iaijutsu or kenjutsu techniques. As taught by Hatsumi/Hayes, ninjutsu uses the same basic footwork for H2H, knife, sword, staff etc. This is not true of many samurai-related disciplines.
Also, the use of the sword in ninjutsu is almost always geared towards specialized use outside of dueling (iaido) or battlefield use (kenjutsu).
Hayes and Hatsumi have put out many informative books on Bujinkan ninpo, most with pictures to illustrate the techinques. While no substitute for real training, these pics compared with similar book on iaido, kendo, or kenjutsu will give you an idea of the differences between the styles.
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