^Yeah. There's a character in Eyeshield who attains SoSa after being surpassed by his rival. Also, Eyeshield had the yakiniku episode too and had an arc against Americans despite just making it to the Kanto tournaments too. Just to clarify, all of these were done in Eyeshield before their respective copy-cat episodes were created in POT.
Umm, you mean the devil bat ghost of Sena? lol... SoSa and devil bat ghost.
Yeah, PoT isn't meant to be realistic. It is more for fun. I remembered I did mention this before in the other thread earlier this year.