It is expected that at Jesus' coming, his appearance will be undisputable. He will not be born as a child, but appear in splendor as a King followed by the hosts of heaven--so that's a pretty big clue right there. :)
But it's what happens to earth and humanity that matters after his coming: evil will be put down, the earth reborn as it was meant to be, the faithful will be rewarded and the kingdom of God will reign with peace and righteousness.
As for disagreements between denominations...I don't see how there would be, but one mustn't underestimate the ability of Christians to disagree!
Add--I don't understand why some people are criticizing this question. It is a perfectly respectful question asked in a spirit of seeking understanding, and we should be happy to answer!