Now, seismitoad is a brilliant pokemon in NU, no one is denying that.
But usage does not show how good it is in a meta-game, how versatile maybe, which is my point.
Seismitoad isn't exactly an every-use pokemon, it doesn't have opposite ways it can be used, such as something like eggy, all-out offense or stall. Seismitoad is either SR offense, or general offense; the problem now is that not every team can use him. I admit, seismitoad would be very good to use on a team... now who to replace? I currently have 2 sun teams, do I really want a seismitoad on that? What about my other NU team, having exactly anything Seismitoad can do. Like sandslash in RU, it can run an offensive set or it can run a utility set, the problem is that other pokemon in NU do both effectively at the same time (golem).