It's not fair to compare Katy to Nickelback. They sell more albums than like everyone else. Their 2005 record sold over 8 million in the USA alone...lol.
You can't come after Coldplay if you stan for Gag's BTW or Artpop tho, both worse than anything they've made.
I personally think that Born This Way is half-way decent, there's some pretty good tracks on there. I'd argue Born This Way was better than Ghost Stories, maybe even most of Mylo Xyloto.
