I'm impressed by your very thorough research. Some years ago a friend and I started on a similar exercise of comparision but, due to lack of time and other things taking precedence, we didn't get very far. Since then, my friend has shifted house a number of times and our notes were lost. However, from memory, some of what you have written above, sounds familiar.
Good on you for perservering with what I can recall is difficult research. And I enjoyed reading your post.
In the little work that we did, my friend and I discovered a logic in the analysis of the connection between Jesus and Krishna. In the work that you have done, that logic comes through. As a result of that logic, we sort of came to a conclusion that Jesus and Krishna were the same soul; albeit reincarnating in two different periods in different bodies.
Just in case you are wondering what logic has to do with any research, well my friend and I are accountants [CPAs in Perth, Australia] and we can't help but use our bean counter logic in our approach to everything.