Is Salters-Nuffield Biology A level bad/less preferred by universities?

I'm interested in applying to Russel group universities for either Biochemistry or Neuroscience but I do Salters-Nuffield Edexcel Biology and I have heard it be referred to as "untraditional" and less preferred.

I also compared the specification to Eduqas Biology and it looks like it misses out on a lot of content e.g. the kidneys (correct me if I'm wrong). It also seems to go in depth on really specific to diseases like cystic fibrosis etc rather than covering more information and I can't seem to understand why.

Should I try changing college and Exam Board before it's too late?