Today I decided to test how safe sidestep and backdash are because I haven't seen hard numbers on it. Only people saying it's safer than it was in SCV which isn't that helpful. How I tested was with Sophi and Sophi since there is frame data available for her. I set the cpu to 1st action guard and 2nd action AA since Sophi's AA is i12. Then with the Sophi I controlled I would do 44K because frame data says (and my own test) says it's neutral on block. Attempting to sidestep after a blocked 44K would get me hit by the AA. I then set the cpu Sophi to do 3A which is a i18 move, and I did 4KK again. That was safe. I could block before 3A connected. I then tested it with 4K which is -2 on block. That was also safe. Then I tested it against Jump B which is -4 on block and that was safe as well. So my test gives me that sidestep is -12. A member in SC Competitive FB group told me that his testing found backdash to me -14, so I tested that with Sophi Jump B on block against Sophi 3A and that checked out. So TL:DR my test have found that sidestep is -12 and backdash is -14. UPDATE- Slade has found that backdash is -15 not -14.