Hi M*W, I just want to clarify that I don´t believe that Jesus was a Buddhist, but that Jesus was a Buddha himself, and Buddha was a Christ.
I´m with VitalOne on this one, the reason why there are similarities, is because they spoke about the same truth.
I agree, people don't realize that being a Buddha or a perfected being, an ishvara, etc...has nothing to do with Buddhism, Hinduism, or any religion..it's just a nature achieved...
If different people from different time periods, different cultures, religions, etc... discover the absolute truth, the way reality really is, true knowledge of all, the actual truth, the true nature of reality, etc...and explain this truth to mankind of course there will be innumerable similarities in their sayings...