Yeah, because Pikachu's theory is so bad. He's obviously crap.
Pikachu has like, the 3rd or 4th best theory in the game. He has amazing air attacks, good dash attack, great smashes, great up tilt, great combos, good range, great recovery, great matchups, great neutral, up, and down special, great throws, is really fast, with good frame data in many moves (Though there are some exceptions), and can very easily rack up damage. I'd dare say the only thing he's missing is KOing ability. The fact that he can barely KO complety screws him over. If he had better KOing ability, he would be better than Zero Suit Samus, possibly even better than Sheik. I hate that misconception that Pikachu's theory is terrible.
Do you wanna know what else I hate? The misconception that Pikachu has terrible results!!! The fact that Esam is doing so great with him js enough to make Pikachu has great results. Esam has gotten:
5th at CEO 2015 (Lost aganist ZeRo and Larry Lurr)
7th at EVO 2015 (Lost aganist Abadango and.... Could somebody tell me who else he lost aganist? I missed top 8 at EVO, and I can't find the bracket anyway)
2nd at Super Smash Con (Lost aganist ZeRo twice, got close to beating him at Winner's finals. Note that he beat Nairo twice here)
9th at The Big House 5 (Lost aganist Dabuz and ZeRo. THE 3RD AND 1ST BEST SMASH BROS PLAYERS!!!)
3rd at MLG (Lost aganist ZeRo and Nairo)
That is Top-Level playing. I mean, he got 13th at Paragon, but Dabuz got 9th at Super Smash Con, and that tournament was more low-Level than Paragon (Will, Angel Cortes, and Fatality were in top 8 that tourney). MVD got 9th there as well, along with getting below top 32 at both Big House 5 and MVG, Three of the loses being aganist random players (4th being ZeRo), and yet people still consider MVD the best Diddy (Not counting ZeRo, since he mainly uses Sheik). So how is Pikachu's results crap? With that logic, Diddy Kong has TERRIBLE, ABSOLUTE CRAP results. And it doesn't help at all that many people say Pikachu is worse than Diddy, despite Pikachu having better theory, matchups, AND results than Diddy. So it just doesn't make any sense.
So, Pikachu has the 3rd best theory, 5th or 6th best results (Smashboards doesn't count since all tournaments, even random ones no one knows about, is considered even than tournaments like EVO, and 1st is just as important as top 16 unless you set it top 8 or win), and 3rd best Matchups (Most likely, I don't know everything matchups obvisualy. But he seems to be the 3rd best there).