>>29910468Aside from the obvious, a lot of defensive Pokemon (and even a lot of Pokemon that are simply capable of defensive sets) can have their prevos actually do a better job of it. For some unlikely examples, go ask Showderp about Bill or Hard Young Boy.
The thing to remember is that multiplication happens after IVs, EVs, and a little extra +5 are added to stats, so just looking through base stats can be misleading when examining the effectiveness of eviolite. A Wartortle's base 80 SpD with eviolite doesn't act like a Pokemon with base 120. It's actually equivalent to a range between base 129 (full IVs, no EVs on both Wartortle and the comparison Pokemon) up to base 144.75 (full IVs and EVs on both Wartortle and the comparison Pokemon). Honestly if I'm not using Mega Blastoise, I'm running a defensive Blastoise, and if I'm running a defensive Blastoise, I'd rather be running Wartortle. Seriously.