nothing(just that second is just a cheap and bad copy of first/previous scenes)..... well for me the second one was cringe... I did not like a lot of things in that anyway.
Sanji's moment is different and it clearly wasn't a cheap copy lol, that's like saying the luffy help me is the original version of I want to live or vivi's speech
Sanji was facing his past traumas throughout the arc, he acted like he wanted to leave luffy's crew and he was ready to die to save people he hates but deep down all he wanted to was go back home with luffy and the gang, but he couldn't leave them
The best part of the "I want to go home to sunny" was sanji saying "even though I don't even think of these scums as my family, I still want to save their lives" with luffy replying "well, that's just how you are"
The situation context and even the line was said with different purposes, robin was begging for help, sanji was saying what he truly wanted, he didn't beg to live or go home, he just said he wanted to save the Vinsmokes
Sanji's moment highlighted his kindness
Robin's moment highlighted how she finally found a "family"