From my understanding. A gang bang is a woman taking on a bunch of guys all at the same time. Where runnig a train the woman takes on the guy 1 or 2 at a time.

So yes the are both the same in the fact a woman has sex with a bunch of guys. The difrence would be in the gang bang the woman starts off with a group of guys in a room with her. They may swap places change up who's doing what and where all with out any one cumming. when running a train one guy goes till he cums then it the next guys turn.

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it's only kinky the first time

it's not the orgasm but getting there thats fun

a shot in the bush is worth two in the hand

whip me, beat me, tie me up, break my arm, but please don't break my heart

"The trouble with the world is that the stupid people are cocksure and the intelligent are full of doubt" -Bertrand Russell