You laugh - but my earlier comment was flagged, presumably because of its comic nature. Which is fair enough, but I don't get why some comic comments are a problem (mine) and others not.
My own attitude is that I can appreciate the humor, but I want top comments to be informative, not comedy. I'll downvote jokes near the top to help bring informative posts up, but I don't downvote when they aren't at the top, or when there are no competing comments.
I would posit the flagging had something to do with this, plus other data intrinsic to the words used.
The above comment isn't just silly, but a reference to an ancient advertising campaign. Anyone over a certain age -old like me- will recognize that campaign.
Large karma pools allow for more 'trust' on HN, and more leeway and access to special features.
Only the Mods/Devs could answer your question succinctly, however.
The only logical explanation I can think of is that either these other comments managed to fly under the radar, or more people found them genuinely funny.
I don't know - I avoid attempts at humour because more often than not people don't find it funny and it doesn't add to the discussion.
I mean, this is my best result this year(7 points):