Big names dont make it great. People said the same thing about The Beginning After the End and look how that went. People want to forget it even got accepted as a anime. Will it replace Solo Leveling...no not really but if it gets a good studio it could sit up there with it.
Just face it you have an anime that's been going on a while and a manwha that barely been out and has one partial adaptation by another writer. Nothing alike will SL turn into something bigger? I dont know probably not I dont think it was really meant to be a long term story. But was it great during its time period yes. Just face it Gamerant only keeps putting SL in articles against other animes because they know it gets clicks.