all games are not created equal

Run around and kill everything in the games different stages and get a high score.  Both games are exactly that, but simplicity isn't a bad thing, which is why Smash TV wins on this one for me.

MadWorld has a combo system where you chain attacks together, but it doesn't feel like a natural way to fight the enemies most of the time.  Smash TV doesn't have combos, but it does have several different weapons and powerups.

If you wanna beat Smash TV, it's not gonna take very long.  Also, there is no story.  That doesn't matter though, because that half hour I may spend playing Smash TV is more enjoyable than the half hour I would spend playing MadWorld.