According to Bob Perry...

He recalled that Mitose's technique wasn't evasive, circular, aiki-ish, or any of the things we associate with Kosho today. He related that Mitose came on like a train...an authoritative, linear hard-stylist. He recounted that his response (Perry's "huh?" look towards Parker) was specific to the absence of circular and semi-circular solutions associated with Mr. Parkers' instructional material, and that it lacked the multiplicity aimed for in Mr. Parkers techniques (i.e., buckling leg check with parry with strike, etc. The use of "with", versus "then" or "and".). Rather, he said the level of sophistication was about on par with a Japanese hard-stylist: Not much fancy or sophisticated going on, but if he's coming at you in a straight line, you definitely want to get out of the way.

For what it's worth. I had several chats in the office with Mr. Perry about this, as I was fascinated by the many existing facets of kenpo that cropped up in it's relatively short lifespan as a system in the US.

Regards,

Dave