Pick the one you think you will enjoy the most, that way you will enjoy what you study (which is important) and won't have any regrets about what you are doing
I am going to be biased and say go with UNSW (despite me not knowing what Arts is like), since they are very flexible when it comes to doing courses within your degrees i.e. many courses are offered in both SEM1 and SEM2, you can easily swap between lectures/tutorials, easily change from one course to another in a given semester, or even changing from one degree to another etc. (despite these being all secondary factors when it comes to picking your degree/career path). UNSW Business School on a whole is well reputed with pretty solid faculties in Accounting and Finance. Plus, you've also been offered a scholarship, so that is always an incentive
. Ultimately it is all up to you, it is your career path and you need to think about what YOU want to do and where you want to end up many years down the track. It never hurts to check many forums on BoS about what each course covers throughout its duration, and what prospects are available in doing that course. Hope it helps