If you don't mind, what are some examples you see in kenpo that are not in other arts?
Sure.
I think it is really in the structure of how the curriculum is put together. In Tracy kenpo, (and this exists in many other kenpo methods as well, altho perhaps we do it to a greater extent) our curriculum is centered around what we call "self defense techniques", which are little scenarios that deal with a specific type of attack and a specific type of response to that attack. We have A LOT of them, and truthfully, it can be overwhelming. I think critics of kenpo in general, and Tracys in particular, will often point to this and say "it's too much, you are trying to have a rote response to every attack, and it's impossible and impractical to do."
Well, what these techniques offer is some very practical and useful stuff, especially at an eary stage of training. And with the large number of these that we have, it gives us the ability to see usefulness in abstract movement. My wing chun sifu was teaching the Bil Gee form, and confessed that he did not have a practical interpretation to one movement in the form. I immediately suggested two possibilities. I believe I was able to make those suggestions from my experience with dealing with hundreds of SD Techs in Tracys. My wing chun sifu was happy to have me make those suggestions, and was impressed with my ability to do so.
Other arts that I have studied, mostly traditional Chinese arts, tend to have a more abstract approach to techniques. You learn the forms, and you interpret movements from the forms and figure out how to use it. I think this is also a good method, it can potentially give you more mileage out of less material, but it can be frustrating for the beginner who has difficulty in making good interpretations. So especially for the beginners, I think the SD Techs in kenpo are very useful and give the student a boost in having something useful that actually works in the early stage of training. Later, after you have this experience, it becomes easier to find usefulness in more abstract methods like the Chinese forms.
Hope this helps.