christianity is all about the truth/god and how it interacts with the world and the people, with its creation also buddhism is fairly close to christianity, having recognized the things that are good and healthy, being very christlike in morality and values. however buddhism misses god, the penultimate creator in its framework. as a result there is no meaning or purpose to existence and life becomes vain with pointless suffering which they try to eacape through decent behavior and thought, making it virtous nihilism, being very close but yet wrong on important points. christianity on the other hand has similar morals and values, however it grounds it in objectivity and provides purpose. the world as a whole can only have a purpose if it was created if it was created with such in mind, and from it stem things to do and not do, objective good and evil. any effort to derive meaning and purpose from within the world is ultimately subjective and thus on a grand scale meaningless as anyones idea of morality and purpose would be equally valid. by introducing a concious and caring penultimate source, god, purpose and with it morality is introduced on an objective level too which buddhism lacks one big issue with the nihilism within is that it devoids one of any motivation. they say attachement is suffering, and so they try to prevent attachment wholly to avoid vain suffering instead of finding things to attach yourself to that are worth suffering for like truth, rightousness, loved ones etc.
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