Think about it. Both are royalty in their domain (Duke's Archives and Candy Kingdom). Both have created an entire class of citizens in their land (crystal knights and candy people). Both kidnap and experiment on people, often with disastrous results (Lemongrab vs Cthulhu women). The difference is, only one of them went mad. Bubblegum is more covert about being a mad scientist maniac but nevertheless they are the same.
My grandiose delusions are better than yours.
