A few latin and slavonic languages define tops as being 'active' and bottoms as being 'passive'.
The literal translation is ill-at-place here. No one is really saying that the bottom dude has to be passive in any sense. It is simply a word used to denote a specific sexual role.
Some cultures are more open-minded towards the versatile guys than the others. More traditional cultures of the Mediterranean would call a versatile dude a bottom, because he bottoms, too. The fact that he tops is kinda self-understood in terms of being a default. In their vision of the world, every guy wants to top but it is kinda useful to know who is willing to bottom