Why is the pre-evolution of Raichu listed as PU on the Smogon Strategy Dex despite not being fully evolved and not getting nearly enough usage to make the 3.41% cutoff?
What's the difference between "latest activity" and "postings"?
Lol, I like how you tried to downplay the mascot of the entire franchise by referring to it as "Raichu's pre-evolution". Raichu appreciates it, but at the end of the day we're still talking about Pikachu.
Granted, Pikachu ain't no powerhouse and it's only "good" stat is Speed which base is 90 (everything else under 60). However, Gen VII did give it not one but two exclusive Z-Moves which is probably why it's even seeing some use if just out of curiosity sake. Normal Pikachu gets Catastropika which is 210 Power (315 after STAB) while Ash-Cap Pikachu gets 10,000,000 Volt Thunderbolt which may only be 195 Power but has a +2 chance to Critical Hit which, if it does crit, would be 438.75 Power (after STAB).
I guess there's also the Light Ball which doubles Pikachu Attack and Special Attack, which makes them go higher than Raichu's, but it's HP and defense stats are still low making it a really fragile glass canon. Though I guess this could let you play a mind game with the opponent, is your Pikachu packing an extra powerful Electric-type Z-Move or is it's offense stats doubled?
(Yes, I'm probably pulling at straws here, honestly Pikachu's place is in Little Cup, but there is some things about Pikachu which I can see would make some people want to try it out if just for the novelty of it).