Oxford university masters applications 2 deadlinesWatch
I don't know if I'm just paranoid... but I simply don't understand how biases can be avoided with this system! Surely the earlier applications will seem inherently better because the later applications will not have been considered yet? Also, what would happen if an applicant in the first batch received an offer, but a better applicant came in during the second batch? Could they lose their offer and be replaced?
If anything the later deadline would probably be more favourable as it gives applicants more time to arrange appropriate references, more time for pending publications to be peer reviewed, etc. Additionally most masters programmes have far fewer applicants than undergrad courses at Oxbridge so the deadlines are just administrative matters and aren't going to make a difference if e.g. there are only 10 applications for 3 places.
If you wish to construct a narrative in advance where you are somehow disadvantaged by this then you can do so but realise that reflects more on you than on the admissions systems of whatever universities you may apply to.