Sometimes it does feel that way. Even my team members were quite skeptical of it too, but it is legitimate.
Viewing post in Raccoin-Ops jam comments
I'm sorry, but I don't believe you either. There are too many inconsistencies. The shape design, posing, and use of perspective are too advanced for a beginner pixel artist. At the same time, there are parts of this that are rendered in ways that don't make sense for any human being to draw, let alone an experienced one; Reflections on the ground from no discernible light source, the raccoons right ear being clipped, light shapes that are distorted along the tail, face, and shoes, and the artifacting and mixels that Innocent Soul mentioned.
It's even more suspicious considering your account is 4 days old, and the pixel art in game looks nothing like the poster. It can be difficult to tell what's AI and what isn't (my last jam entry was literally about that), but there are way too many red flags here for this to have plausibly been made by you.