It is easy and acceptable to say all beings have Buddha nature. If you like to hear that, then I have said it :) Go no futher.
What I personally feel is that a question, sometimes, is not answered pointing out the obvious, but also the dissimilarities. Like if I sell a product telling what it can do, but I skip some functionality where it is crucial to tell what it does Not do, then I have not really given the information. Like if I sell magic potions, the 'can not do this' part becomes really important. But you know some companies do not really believe in this, and I end up paying more for less :(
Now:
Buddha is rid of the something very significant. Buddha nature isn’t much about what he is, but more about what he is not. No defilements, no more birth, no more circles of existence…even nibbana is a no-definition. With great momentum (all the preparation yogis make for, is this final Olympic) he has broken a few barriers and experienced through the physical experiences (ahh I remember a long forgotten dream here, this dream helped me understand this with great symbolic pictures). He has experienced a state after aeons of merit as a yogi, a vipassi. Some existences were of a fish, other animals, kings, devas and humans. But is that fish, is that dog, is that human in the previous existence this Buddha?
*But you know some questions are null questions, they should have not been asked in the first place! I know the theories of educationists/no question is irrelevant ... there is a skill to asking the right questions, life-changing questions, and there is a whole set of misleading questions, life-challenging questions
Pardon me, I express only personal opinions here
