There is no proof the "Buddha" foretold Jesus. Buddha held the eightfold path led to enlightenment (nothingness really, -- like death which is provable unlike buddhist belief or christian). No need for a saviour and no original sin - though you inherit negative karma which is impossible to overcome as evidenced by the billions that suffer over and over again supposedly due to karma (ancient Brahmin explanation for subjugation of lower groups masked as knowledge). It is not practical or applies to anything real, but it makes people feel better.
That is what fairy-tales do: they make us feel good.