Her medical skills, which she learned from Tsunade are impressive, but Shizune and even Tsuande herself also have great medical feats. Hell, even Kabuto's medical prowess surpasses Sakura when it comes to experience and knowledge. It's not a big deal when characters like Shizune and Kabuto already have medical feats similar if not better than hers who aren't from any special clans either.
Her physical strength still pales In comparison to Tsunade's, so I don't know why that's a big deal. She has no chakra nature affinity and is mediocre if not fodder level compared to the majority of characters from Naruto and they aren't from any special clans like Deidara, Sasori, Konan, Hidan, Kakuzu, Lee, Gai, etc..) Just because she isn't from a special clan does not mean you can use it as an excuse for her being considered great when it's not even the case. Lee started from nothing and look where he is. A taijutsu genius who wasn't born from any special clan and knew nothing about ninjutsu or genjutsu.
You people need to stop using the excuse of a special clan to justify for her short comings to achievements that aren't even great in an overall standpoint of this story, when other non special people (as I mentioned) are way stronger than her.