Nuno,
Gauntlet : 8-way joystick
Pacmania : 4-way joystick
It doesn't look like the same stick

.
edit :
Is your pacmania pcb in the following picture, and which is it ->
here (the two pcbs are mine).
US version (right, Atari) :
- The first Block Town only has 1 Level.
- The first Pac-Man's Park, Sandbox, and Jungly Steps Worlds only have 2
levels each.
- Spunky shows up on the second Sandbox World level.
- Top 10 Score List. Will let you write initials, before continuing.
- The "Pac-Mania" Logo has Pac-Man, Pinky, and Blinky circling around the logo.
- There's Stage Select
- Items are placed differently
- Courage Bonus this would activate once you got past Block Town.
- Total Levels : 19
Japanese version (left, Namco):
- First Block World has 2 levels. And every other world after that has three
levels.
- Spunky shows up on the third Jungly Steps level
- No Stage Select. However, if one Japanese Machine has Stage Select, you cannot
continue.
- No Top 10 Score List.
- The 'Pac-Mania' Logo doesn't have Pac-Man, Pinky, and Blinky circling around
the logo.
- Total Levels : 23