Russell group vs non Russell group uniWatch
Student life, in partnership with UEA
If you go to more elite Universities you will more likely have to complete more assignments, attend more seminars/discussion groups and the work may be more challenging in general. Although the same basic concepts of subject knowledge will be similar in a student who has completed a similar degree at a Russel group uni vs non-Russell group.
e.g. someone who has done a chemistry degree at a 'lower ranked' Uni vs a Russell uni will have about the same ability of understanding of the basic concepts but also other areas of in depth knowledge of the subject depending on what modules they have completed.
Your question is very circumstantial, universities will all have a different level of learning. I think it falls under a similar thought process that higher ranked universities are superior, which must mean they're harder to get degrees from, etc.
I wouldn't let it truly sway your decision on which university you'd go to, if you are currently looking for one