I find that Buddhism and Martial ways are great philosophies. I tend to stay away from the words "belief system", those seem to be slippery words.

Most religions IMHO are essentially the very core, similar. That being said, they all have differences. None of which I am qualified to speak on.

Only when you start getting into the obscure beliefs, no offense if we have any of these, like indigenous tribal religions do things tend to go sideways in comparison.