See its details like this that really get me and why I believe it all. From a 100p image, we can tell all 7 of the characters are expressive, uniquely designed, and original, and fit within the constraints of the leak.
I'm not saying somone can't do this, I'm asking why someone WOULD do this. If it's drawn by a faker, they obviously have some serious passion for drawing and have some great knowledge about each of the characters.
- Geno was drawn small, when most depictions have him big or bigger than Mario. It....works here.
- Chorus Kids are harassing the conductor, something never depicted in art before and is suggesting we use the conductor somehow in gameplay along with the kids.
- Isaac is seen using GROWTH of all things, and not any other, more iconic Psyenergy moves he is known for. His scarf is flying upwards due to creating growth in the ground, like wind pushing against him.
- Banjo and Kazooie are doing something similar to their famous T-pose where Banjo thinks he's flying and Kazooie is flying for him. BUT, Banjo is totally aloof to Snake's missle launcher, while Kazooie, the more obvservant of the duo, seems to be freaking out about it lol.
- Ken and Shadow are doing familiar but unique poses on the banner. Nobody can find anything remotely similar to that art.
- Mach Rider is hard for me to see, but again, like the other 6 characters, the character seems to fit with the artstyle and is blended in with the banner altogether.
For this to be fake, a person needs to love all things Nintendo and videogames, be an excellent art designer, illustrator and editor, while simultaneously be 2000iq maniac who has planned all this a certain way make people believe the leak is true by Occams razor (aka, he hypothetically made it so ****ing complicated and circumstantial on purpose to make people believe the easier thing is to say it's real...when it probably just is)
In addition, he puts Ken on the mural and NOT Incineroar, which is odd because both have always been leaked, discussed, or believed to be in the game AT THE SAME TIME. If it's a fake, a faker would know this fact.
Finally, and maybe most importantly, nobody after 4 days has come forward admitting or providing the sources for the leak if it were fake. Usually when things like this happen, fakers want that 15 minutes of fame pretty quick (Omni, Agnes leaker, etc) and reveal themselves not too long after freaking out. Nobody, not even anonymously, has gone out their way to update this leak even more, when usually things like this have multiple parts to them (a person releases some thing small, then bigger to keep the discussion going)
Just my two cents on the matter.