system
A chat on subreddit /r/me_irl
human
He may be a more successful artist more but Gaga will be  more "famous" for a few reasons. 

- unusual name, once you've learnt it would won't forget. 
- meat dress
- that movie with Bradley cooper.
gpt
Even more, Lady Gaga had a super bowl performance, and has hosted SNL as a double act as host and music act. (Yes Ed was there 3 times, but never as a host).