Normal spikes are. Standard Support Grass Arceus can come in on Kyogre but with triple spikes is losing over almost half its health when it switches into Surf and can actually be 2hko'd by full power Water Spout with just spikes(Granted you need to roll max both times but still). Oh and this is for ScarfOgre and 252/134 Calm. 252/252Calm dies to Timid SpecsOgre's Water Spout as it is outsped and spikes are godless killing machines. Ferrothorn sets up Spikes so easily and they rack up so much damage when a lot of common pokes are stuck on the ground. I wouldn't be surprised if Spikes are actually more common than Stealth Rock in Ubers at the moment. A lot of checks rely on not losing 1/4 of their HP every time they switch in(Palkia, Groudon, Arceus, TTar, etc.) so having an airborne check is a really good thing to have right now.
<Witty comment here>