I don't is it the anime made her look strong but I've notice that Oda has made Robin weaker than before. Before she can take hits from Yama but now she looks as if she's in a deep pain when the Moria's shadow bat bit her. She's also been losing in most of the fight she's in lately too.
They've weaken down Robin
Read the manga.
And stop making pointless threads.
You're comparing a Shichibukai with a worker from Enel…
She's not weaker, its just she is usually the "helper" type, that saves the SH's from death and helps a little.
Besides, SHE FREAKING TWISTED OZ'S ARM.
Lets not forget past exploits like convincing Franky to join. D: