No, "everyone" does not know that it is Single Ladies. Both were huge and iconic. Bad Romance has the better video and song and pervaded pop culture more than Single Ladies no matter what way you look at it: video views, video parodies, awards, chart success, airplay, etc.
No...With all the "unofficial" versions of Single Ladies that were taken down (some having around 80 million views), the actual total view count would be well over half a billion.
Some of you are doing the absolute most in this damn thread. First off, the question was which song is more iconic, not which one you like more. Secondly, just the very fact that when someone mentions getting married people immediately say some variation of "Put a Ring on It" should explain its impact.
I don't find anything iconic about Single Ladies. You girls stay exaggerating like there's no tomorrow.
Bad Romance is absolutely fantastic, and anyone who chooses 3 women dancing in front of a screen over 5 minutes of masterpiece art..... I have nothing to say to you.