There is something slightly with the system if people are actually even thinking about posts in terms like this. "The other guy stole my spotlight?" Do people somehow make money from their HN post stats? I guess somehwere some how some people probably do.
I do obvioulsy recognize that at a low level it's fundamental human nature to apply those kinds of game/competition thoughts to literally everything in life, but still it seems like this would be a case where the act of thinking about it consciously enough to write it down, is enough to make one realize it sounds silly.
It seems like human nature that if you attach a number or score to something, people are going to try and get the most they can.
Which is kinda the point. Nobody wants to lose score, so they don't post horrible comments (usually) and they try to find the most interesting articles to post. That's good for everyone. But it does have the side-effect of people complaining that their karma was "stolen".