HSS has sense. That's really.... all I was trying to say.
Obviously, if I think the MU is 45:55ish (Pika favor), I'm not saying Pika's outcamping Zelda is a MU ruiner, which is what I think a lot of people were assuming..... but I was trying to explain that Pikachu does outcamp Zelda at a certain range, and that's what Legendary (not LDPK, lol)/Hedgedawg didn't want to accept.
Anyway.
The thing about tjolt camping is that although it's slow/easy enough to shield that you don't need to approach immediately, you'll still need to react eventually. Like I said, it'll hit Zelda in the feet sometimes if your shield is low, so you can't afford to sit there all day unless you can perfect shield consistently.
Now, you say "if [Pika] reads wrong he leaves himself open for punishment," but MOST of Zelda's options are easy to react to. Minus perfect shielding the jolt, pretty much all of them are slow enough that Pikachu can punish or avoid what's coming next on reaction (especially Naryu's, lol.... what an *** move).
It's not a huge gamble for him to camp because no matter how you react to tjolts short of perfect shielding and moving in to punish, Zelda is slow enough and far enough away (at the range we're talking about) that she's not really a threat with much.
Anyways, just so I look fair to everybody (and not "biased," lolol), a way to get around tjolt camping is to CP a stage with lots of platforms (Battlefield, Castle Siege [last transformation kinda sucks for this MU, though]). Or take Pika to Brinstar where the goo and pillars will seriously **** up his tjolt shenanigans. If it's legal, Luigi's Mansion is really good as long as you can avoid getting jab locked.
Basically, you want to minimize his ability to camp and run away from you while not gimping yourself, which is why I didn't include PS1 (looks good on paper with all the platforms, but Pikachu can potentially wreck on that stage). Imo, Pika can't manipulate platforms as well as Zelda can.
Learn to perfect shield consistently.
Keeping Pikachu in close quarters is the best thing you can do for yourself, because at close range on the ground (if you're in the air, wtf are you doing up there), he loses in range, power, and disjoint. It's easy to outspace a grounded Pikachu..... the hard part is keeping him close, because he will run away if he's smart, and Pika is faster and more mobile than Zelda.
Also, a quick note: Always remember that Pikachu has QAC. If he's used his second jump and you're ready to punish with usmash/uair like you would on any other character, always be aware that he can just QA past you. Zelda doesn't fall or run fast enough to punish that. This gets sort of into mindgame territory, so.... yeah. Just a word of caution.