buddhism is far more blunt, cold, and honest about reality than christianity. buddhism makes it clear that suffering and evil is an intrinsic part of reality and that to experience reality means you will experience suffering. christianity was written by semitic plebians who were so egoistic, prideful, and resentful that they couldn't conceive that evil was a part of who they were deep down, so they externalized that evil as "original sin" and "the devil" as boogeymen rather than coming to terms with who they are.  plus, buddhism at some level retains far more of the original indo-european religion (that is, the rigvedic pantheon) than christianity does.
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