^Sorry, but, much of those people going to the concert is because a) she represents Kpop, so they would go to the concert no matter the person performing and b) Blackjacks supported CL because she's was part of 2NE1, thus they thought supporting her, they were supporting the group.
SMTown was crowded, Epik High US Tour was crowded. They represent Kpop, it's not that CL is wonderful so that she can sell out tickets because she's so amazing.
CL career is a flop. She debuted already 985457 times and didn't suceed. Dr. Pepper was terrible, Hello Bitches didn't really make her more known and Lifted is pretty dated and got lukewarm response.
She performed on The Late Late Show? So what? Girls' Generation performed on Live with Kelly and Late Show with David Letterman and even so their efforts were fruitless in the US.
Not mentioning that YG played their fans. "Papa YG" knew very well that 2NE1 wasn't coming back when Minzy left, and they stated the 3 girls were working on new music, something that wasn't true. If it was true, there would be no reason not to release it before the end of their contracts. So YG used the fans unconditional support to CL's benefit. Do you really think that being a fan of the group translates into support a solo effort by a member? Tiffany from SNSD knows very well that's not true. Just look at her debut solo sales.
So your friends go wild when listening to Hello Bitches? again, so what? I Am The Best is huge here in Brazil, everybody dances to it in the clubs, but again, ask around to see if anyone invested in getting to know more of 2NE1? No one cares.
So, don't say CL is successful, queen of Kpop, or whatever, because she hasn't done anything noteworthy so far. At most, her english debut has been laughable. Don't forget that Utada Hikaru, BoA and the Wonder Girls conquered a lot more than her and they're nobody when it comes to fame in the US (not counting their previous supporters).
I think the image CL is trying to sell of her to the media is very
wrong, misogynistic and xenophobic. I myself would be glad if she didn't suceed in her endeavors because she's not bringing anything new or positive to the table. But, oh well, we shall see.