I've already seen this art on another site, but I might as well just reiterate that you nailed EVERYTHING here.
The dull and flat colors, Eggman's face being obscured by shadow to look "intimidating" (even when it doesn't make sense), the weird brows-over-brows and generally fleshy look Evan Stanley draws Sonic with… it's just… *chef's kiss* …perfect all around. The fact that the scene you're referencing was already a pot-shot at the 60's Felix cartoons definitely helps.
Also, sorry that the usual crowd ended up sharing this on Twitter anyways. Jerks.
EDIT: …And now "let's do it to it" is canon as of the Frontiers update. God help us.