You say your Supervisor "wasn't much help" - but you will need to be able to qualify that. You will have to be able to demonstrate - with concrete evidence - that you did not recieve the supervision that you should have, and that this directly impacted on your submission. If feeback was given verbally with no written back-up, this will be difficult to prove. If it came in the form of emails/feeback sheets, then you should revisit them to see what feedback you did get.
The other thing to bear in mind is that when a team of tutors supervise and mark, there will inevitably be variation in supervision style, so it's not always helpful to compare what other supervisors did.
If your supervisor did not do their job properly and as a consequence your output suffered, then you could appeal but you would have to be able to demonstrate how they failed to supervise satisfactorily.