Examining the facts, there was an article dated
June 17, 2002 about scientists saying an asteroid will hit the earth around that time, and I posted it in Comment #15
HERE. We won't know until 2029 whether or not Qronos1's prediction will happen or not until that year comes and goes. Therefore Qronos1 has not proven anything yet on this subject.
As far as Qronos1's posts in the Blog, since it was possible to alter the date, it has been debunked. However, if someone could find Qronos1 posts somewhere else, or conversations about his Blog that are dated 2005, then we would have some proof that he posted it in 2005. But so far, we have nothing to validate the date on his Blog.
(Qronos16 has been disqualified from being a Time Traveler, in my book, because of my research findings. It's very possible that Qronos1 and Qronos16 are the same person posing as Time Travelers. Neither of them have any differences in their speech/writings from us that they should have if they were actually from a different time period.)
With John Titor, we know he made his postings between 1999-2001. He told us many things that would happen in the future, and 11 years later, many of those things have indeed happened. The things that didn't happen have been sifted through and can be attributed to his presence here altering the events on our Timeline. (JT also told us about the hidden code in the IBM 5100, which he could not have known about unless he was one of the original Engineers that created it, or a Time Traveler, because that information was not public knowledge in 1999, but JT knew about it.)
IMO, this year, 2012, will make or break JT's story as he gave us clues about something that is supposed to happen this year. These things are all discussed on the 2 other JT threads on the Forum.