Originally Posted by
Zeeguy91
Not really. Not even close, actually. Firstly, you're assuming that these events won't be brought back with those 10 years that we are supposed to be getting back at the end of Rebirth. They likely will be added back to the timeline, which would then mean that they physically did take place in the DC Universe. Secondly, even if they weren't added back to the timeline, the memories of them being added back is not the same as only having a "dream." Dreams are things that you know DIDN'T happen. In other words, they are not reflections of real-life events and as such have no impact on the narrative of your life. Additionally, your dreams are things that only YOU know. Shared memories and experiences are known by every person who experienced them.
If Cyborg and the rest of the Titans and the DCU regain their memories of Cyborg as a Titan that impacts how people view Cyborg and how Cyborg looks at his own life. He knows he was a Titan. He remembers his friendships with all of the individual Titans. And what's more, they remember him and remember their common bond. So Cyborg could walk into Titans Tower and be welcomed as a former Titan, whereas now, he's known only as a JLA member and if he walked into Titans Tower, the Titans would wonder what he's doing there.