I think your tone justified. The poster is pretty bad. Its too, flat? His face looks like a sticker pasted on. Some how the cartoon has more depth to it.

I think it might be an homage to the season 1 cover for Hajime no Ippo, "the fighting".

https://www.imdb.com/title/tt0481256/

iirc Jordan is an anime fan and has mentioned Ippo in interviews.