Why you over others vs what are you able to bring to this university
whats the difference between those 2 questions?? how am i meant to answer...
"why you over others" is them asking you that although they have strong candidates applying why do your qualities + work experiences etc make you an ideal person for medicine - this is their way of asking you to discuss your strengths and provide a few examples of how you have demonstrated them
" what can you bring to the university" is their way of checking how much you actually know about the university that you've applied to - you can mention things like extracurriculars / clubs / interests / hobbies / writing for the uni's newspaper etc - they want to see if alongside the academic aspect you can also be an involved and enthusiastic member of that university in whichever ways suit you