Dude Juggernaut already stomped out Venom in that same series. When he was done he Eddie was jsut a black pile of goo on the floor.
He didn't beat Juggernaut he just ran away. If Juggernaut was bleeding or torn up or soemthing then you would acutally have a reason to sayt hat Venom might be too much for Juggernaut. But for plot reasons Juggernaut ran off.
The point is that, that is what a beating looks like not some stuff where Juggernaut left.
If Juggernaut was hittign Venom to no effect but he diecided to run off you wouldn't say he had lost so don't be ridiculous.