Ok tell me admail, what if..tomorrow Ekta introduces a twist that sneha is actually Bajaj-Prerna's daughter..and those paternity reports (saying that sneha was anu's daughter) were forged by aparna. Sneha finds out this too, and slowly slowly gets detached from anurag. I am only giving an imaginary situation. Will u still like sneha the same way you like her now? Will you still support her? Ask yourself and answer honestly.
My point is- we sll are seeing sneha for the person that she is. WORSE than sharad because sharad admits that he is bad, and so, in that area, he IS better than sneha. You, I am afraid, are looking at her in positive light because she happens to be daughter of your darling anurag.
Regardless of my affection for Anurag's children, there is no comparison between Sharad and Sneha in my opinion. Sharad is inherently bad. Sneha is not.