The PC Gamer article about it says it could even be faster than the Titan RTX. But they didn't say overall faster. They said "That 5% could be enough to see the Gaming Z Trio outperform even Nvidia's super-smart Titan RTX." There's a link for it of course but I don't think it's needed now.
We already know other 2080Ti are faster in some games but not most. It sounds like PCGamer was saying a few more games could be added to that list but not a super majority. And it's only a couple or few frames either way in general, right?