Actually, the effects are the least of why I think PJ's films is terrific and why I think the original film is terrible, hence why I commented on how horrible and uneven the characterization is in the original. The Ann/Kong relationship in PJ's film is the moving relationship I've ever had the pleasure of experiencing between two characters, in the original it's an angry simian carrying around a terrified blond woman perfectly willing to sell him out if she can profit from it that's terrified, because he is nothing but the monster that he's labeled as, defeating entirely what should be the purpose of the story.
Yes, you said before that Kong is exactly the same, and you can insist upon it all you want, but it won't make it accurate. The bond is a HUGE difference in the character, why he reacts the way he does rather than just doing it because he's a big pissed off ape is a HUGE difference in the character. Kong really didn't become captured, escape, chased, and killed because of her in the original, that happened because he was a big pissed off ape that liked to break stuff, he didn't react to situations based on how he felt about her because they really didn't feel a damn thing for each other(except for the terror he made her feel). Ann pouring her heart out at what happens to Kong makes a massive difference compared to showing nothing but fear (since that's all he gave her reason to show in the original), and the subtely of their reunion in NY is beautiful, the look in her eyes when she sees him again is incredibly moving(has nothing to do with CGI by the way)and vastly more powerful than the entire original film, which isn't saying much.
In the original she's just there while things happen to Kong, she's not really the reason. The piss poor execution(and I'm talking about characterization and storytelling primarily, not effects work)make the original completely void of the heart and of the message present in PJ's film. They did the best they could with what was available at the time effects-wise, that's understandable, but there's no excuse for the plethora of other massive flaws, larger than Kong himself, that make it a horrible film.