Well done.There were two ways of doing the same joke here, and you handled it in the best possible way. Nicely done!
Also, as for looking like Cyanide and Happiness, don't worry about it. I know you're getting some flak from other people, and "individuality" is great and all, but ultimately, all that matters is the content you produce. If you think making it look like somebody else's content will make it better (funnier) without riding up on their fame, then really, go for it.