You're not wrong about that. But one edge SK had over SS is that SK at least showed Karin can be more mature even if she doesn't like it with how she let Sakura raise Sarada and lied about her not being the mom to Suigetsu for whatever reasons and just wanting Sasuke to be happy, something Sakura NEVER showed to want due to how she is written.
I'm not saying it's good what happened, that's for sure. It can be much worse a lot of times with SK in alot of areas for sure, don't get me wrong.
I actually think Sakura is the more mature between the two of them, but it's splitting hairs to me. If Sakura had been stabbed instead, Kishimoto almost certainly would have had Sakura just cast it aside like nothing the way Karin did. One of Sasuke's biggest flaw as a character was how the case reacted to him. There was no limit to the kitten that they would forgive.
That said, I disagree that Karin is lying about her being the mother. I've read Gaiden more than once and I do not share the interpretation that many people on this board do. I think (1) Sakura is Sarada's bio mother and (2) that nothing about Sakura Gaiden suggests trouble in paradise. They ending suggests a relatively happy family. Gaiden is horribly written and ultimately pointless. I hate the who umbilical cord portion because it was a cheap attempt to up the drama and sell the possibility that Karin might be the mother only to confirm it was just a temporary red hearing so as to chicken out of more pairing wars. It's also ultimately beside the point, because theme was bonds over blood. But because of the cord stuff it comes across as...."our bonds make us family...but P.S. Sakura is the mom anyway." Either commit to the theme or don't do it.
I think, at least in my case, Karin knew what she was getting into and was 100% okay with it. She wouldn't let Sasuke ignore her. Sakura was quick to get depressed and sulk off. Sakura knew what she was getting into but hoped it would be better. Even now she hopes it'll get better and she's not satisfied with her 'marriage'. She just puts up with it because she's, as Kishimoto put it, addicted to Sasuke like a drug. But Karin made herself a part of his life and happened to be in a good position to do so.
I'm not going to say it's a healthy relationship by any means. I can't defend that. But I can say, with the same reasons as my last post, it would be way more happy than SS. Sasuke couldn't ditch her and his kid for 12 years if he were with Karin. They'd likely travel with him and even if he didn't want them to, Karin would probably have none of that.
I don't know that not letting Sasuke ignore her speaks well of her. The idea that she possessed an unhealthy addiction could work if that was what Kishimoto wrote. But Taka's formation and later reunification does not convey that message at all. If her relationship with were meant to viewed this way, then Taka's reunification should have had a much different, much more tragic feel to it, but I think it was played straight and the audience was supposed to accept it was all water under the bridge.
Kind of like how we believe Sakura would not have put up with current Naruto's behavior of never being home and refusing to be a part of the family.
That's something I've noticed. In SS/NH, Sakura and Hinata just let their 'husbands' walk all over them brutally and without complaint. NS/SK, neither Sakura or Karin would have put up with that. I feel like Karin coming back to Sasuke despite what he did is an example of that.
Those are just my thoughts. I don't think SK is worse than SS. It's the other way around because Karin never started getting sad or depressed over Sasuke's rejection of her advances, like Sakura.
For me, Sakura's sadness and depression over him are minor compared to what Sasuke did to Karin. There is simply nothing in SS that compares to stabbing Karin and leaving her to die as a deliberate act of cruelty. The writing of SS is probably worse in that 693 might be the worst use of a parallel I've ever seen, but in terms of the relationship itself...SK will always be on worse because of that scene and how it gets handled later on.
Two other things of note. Sasuke SOUGHT KARIN as part of his team when going on his hunt for Itachi. Even if it was merely interest in her tracking power, that is more than he ever showed for Sakura since they weren't paired by their own choice or decision. (even though Sakura wanted it) Also, Sasuke saved Karin in the forest of death in Karin's flashback and he gave her a pretty warm if not cocky and cool smile, WHICH AGAIN was more than he ever showed Sakura. Just being objective about this, though I DO AGREE that if you want to Say SasuSaku is toxic then SasuKarin does show that unheathy mess almost completely too. It has to be a two way street, guys and gal
Of course, she doesn't actually get used for that purpose as Itachi eventually seeks him out. Much like Suigetsu and Juugo were supposed to make sure that no one interfered, but Kisame never tried to get in the way. Just another in the long list of reasons why Taka sucks. Karin at least chronicled his descent into darkness, not that we really needed her to spell it out, but she did fulfill that purpose. If he actually potrayed it as an unhealthy mess and a rather tragic relationship, I'd buy into that more. However, the apology scene and what follows rips that idea to pieces.