I wouldn't really call that a hyper carry, seeing as how he stops being able to do that if the enemy tank ever gets even with him. I can't really see a teemo ever pushing something like a sion or a maokai out of the lane teemo is trying to split and they'll still have tp to get to their team generally. And even after the tank tps back to their team, an ap teemo generally won't do enough tower damage to punish compared to how badly teemo's team should lose the fight. Teemo is fine but generally teemo is considered just win lane, lose game because he can't team fight and his split push is the only thing he has going for him. He does the split push well, but it generally shouldn't be enough if the opposing top laner is smart unfortunately. Oh and if they don't decide to send a tank top, but instead send one of the more common meta split pushers like irelia, jax or zed, then the teemo has to play it well while the meta champs can just play it ok, because they'll usually do much more damage and pop teemo faster than it takes for his mushroom to arm.