For me every time I watch Regular Show, I usually watch it with Adventure Time and MAD (which i no longer like because the parodies are terrible now) and Regular Show always stood out for being the funniest. That's why I think Regular Show is better. Also because lately I haven't like Adventure Time or laughed. I would say both if Adventure Time was just a bit funnier since I love the characters in it just as much as Regular Show. Like for example "Burning Low" which premieres tomorrow looks really good but in the promos it was so cheesy when Bubblegum said "I thought I would be ready for this".