Which Atari 7800 Game is the Toughest to Beat?

[Funkmaster V 27]

After several heated debates, here is the final list we came up with. I would love to hear people's opinions on the matter. 

Which Atari 7800 Game IS the Toughest to Beat?

http://www.atari7800forever.com/badd.html

[DegasElite 972]

No holds barred, Impossible Mission. It's tough to time the obstacles correctly. I would like to get the possible version. At least it's beatable.

[dauber 823]

Unless you count Impossible Mission, then Fight Night. The computer player has special moves, while the human player does not.

[Funkmaster V 27]

1 hour ago, dauber said:

Unless you count Impossible Mission, then Fight Night. The computer player has special moves, while the human player does not.

Oh, but the player has the most powerful punch in the game!!!