Many who deny Jesus' saving of all will point to Jesus' words concerning Judas as evidence that "the Savior of the world" won't actually save the world. Why don't you see for yourself what the Scriptures teach.
Jesus is greater than Adam? Yep. His death and resurrection overcome all the effects of Adam's sin. Adam's sin brought death to all mankind; Jesus' work causes all to have immortal life. Romans 5:18 - "Therefore, as one trespass led to condemnation for all men, so one act of righteousness leads to justification and life for all men" (ESV). 1 Corinthians 15:22 - "For even as, in Adam, all are dying, thus also, in Christ, shall all be vivified" (Concordant Literal New Testament). Believe it!