First, that's not a big accomplishment. Jennifer's career was dying by the time Beyonce went solo after the tragedy called Bennifer. There was no need for J.Lo anymore when we had a younger, more talented, less annoying and overexposed (back then) alternative.

Second, drop the "supposedly." Everyone and their grandma knew she was copying J.Lo when she readying her solo career from 2002-03. She was the huge "ethnic" female celeb and it was normal to emulate her, which is why Priyanka Chopra is probably doing it now and people like Kerry Washington cite her as an influence career-wise. Even Khia references it:

"Can Kelly Rowland make a little bit of money, Bey? We all seen Kelly at the EBT card awards, shut **** down and here you come making Jay-Z call his favors to put you on the TV screen with that tired and delayed ass performance. We all could have passed on that, girl. We are tired of seeing you trying to imitate J.Lo. I'm a fan, true enough, but we really sick of looking at you. We sick and tired of looking at you. And the wigs... give Solange a chance! Give your husband Jay-Z some children because he's getting old as Mathusa and his time is running out."