VReverie would be more like Tsunderia than CyberLive. Top-tier talent roster, but suffered from serious lack of direction and apathy from the people running it. Had whole generations bail, then soldiered on as a corpse with a new/stillborn gen for another year. Although I will say they were more actively malicious than Tsunderia on their way out. The talents then scattered to the wind carving out a following either as indies or in other companies, but still have a lot of positive interactions with each other.
EIEN is more like CyberLive in how things played out, with the allegations of favoritism, and talents apparently being at each other's throats for a while, complete with thinly-veiled shade and Discord screenshots. The downfall was also accelerated by their top talent leaving for reasons that are not completely clear. And much like CyberLive, EIEN got some early notoriety for the wrong reasons (the gaming chair incident being analogous to the paid Discord calls for CL). Although a caveat here is that the OnlyFans girl in EIEN was the good one, apparently. On the side of the talents, everyone is keen to just go on their separate ways after a failed attempt at post-dissolution unity. They're already playing the "we just want to move on with our lives" card, though I get the sense that, much like CyberLive, this won't be the last we will hear about EIEN. We might get some bits and pieces about what happened over time too.
TL;DR - The difference is that the VReverie girls, much like the ex-Tsunderia girls, bonded through their common experience of mismanagement, while the EIEN talents had a falling out because of it, like CyberLive.