Buddhism was a revolution because Hinduism promoted a class rigid society. Buddhism acknowledged that class existed but basically said that it was unimportant.

Buddha was a prince who decided to become a hobo.

Buddhism acknowledges 5 realms of existence, gods who feel no pain (duh they don't exist); demigods who are humans who are treated like gods, humans you and me, animals who are enslaved and eaten, and hungry ghosts whose only existence is to find food and water. And Buddhism says to treat everyone with compassion no matter what. Buddhism is the most anti class idea that was ever thought.

Until children are taken away from parents in every household and no tradition is passed on from parent to child and everyone on earth is treated this way, class will exist. And is that a bad thing? Because that's sort of the thing communism seeks to eliminate in principle.

Buddha was a lot like Jesus in that both myths were revolutions in their society's. Buddha said class was unimportant while Jesus allowed Judaism to include people who were not born or married into the faith.

Also, don't you think it's odd that the Jewish tribe of Ishmael is considered to be proto Muslim when Islam didn't come into being for a couple 1,000 years? So really these people were Jews, just not a completely direct lineage of who we now know as Jews.