Shaya
Well, Greninja's Bair is 5 frames and still doesn't hit anyone except like Bowser on the way up. It hits much higher than Fair but still, I'd expect Fair would need a drastic reduction in startup (and thus get really overpowered) to hit on the way up. Greninja jumps really high really quickly lol, even in his short hop.
To be fair I don't mind the lack of rising aerials so much since Greninja's ground game is strong. From a ZSS perspective, she doesn't have a particularly strong ground game to back up her lack of rising aerials and poor out of dash options, so I think that's why it's a bigger deal for her. His design is top tier-esque already but, yeah, falls down in a couple of places (rising aerials, aerial frame data, out of shield game).
To be honest if I were to give one (reasonable) buff to Greninja it'd be to shave off some ending lag from Dtilt to make Dtilt Usmash more real if you hit with Dtilt up close. It's not safe on shield there, so there's still risk attached, but it'd be a nice clincher or hard OoS punish on a risky option.
The only thing I really want is old Usmash, of course~
Esam used Yoshi in one game in pools, and Corrin in two poor MUs. Esam used a secondary at this tournament and didn't go solo Pika, but your post sort of implies that opting for Corrin instead of Pikachu makes Pikachu less viable, when I don't think a secondary in one or two scenarios is good evidence for [whatever lowish Pikachu placement]. He didn't go solo Pikachu, but he did use Pikachu in probably over 90% of his matches.
Esam lost to second and third place, and in spite of some poor games, I think it was a pretty good showing from Esam. iStudying of course did great, and knocking 25th with solo Greninja is stupid, but it's sort of weird that you praised 25th and then went on to criticize Esam's 17th. Both results are good, and both players lost to other great players and poor MUs (except ZSS/Marss, who outplayed Esam hard). I really think Pika's results are way too heavily criticized, when Esam still places reasonably well and beats some amazing players. Other border high tiers would love Pika's results via Esam, but with Esam/Pika, his results are seen as a "weakness".
On the other hand, it's silly that Illuminose seems to be going by Esam's MU chart, like Pika only loses to Mario, Ness, and G&W, and treating these opinions objectively. Also that he is glossing over Pika's range and killing issues. Not saying Pika is top 10, but some of the people here saying Pika is mid tier are really stretching it.
It's not weird at all. Why did this get so many likes?
He made it sound like 25th is decimated, so ESAM must have got like 3rd, when he only got 13th (correction) with solo Pika (9th overall). 13th is of course a great placement, but it's not as good as that guy made it sound.
Using Corrin in bad MUs makes no difference, he didn't win any sets with solo Pika in top 16. I'm tempted to say he didn't win any games but I can't remember and he might have taken a game off Ally.
I don't really read this as a statement about Pika's viability either way, it's just that if you're gonna say someone who got top 32 got decimated, then your guy better have made it to losers' finals at least.