It makes a difference... Go google QS world ranking, and try to join the highest ranking university as u can. It will not only boost u for your 1st job, but it will follows u in the remaining of your life. The network and your background are all important if u want to climb up to higher management. Ppl will judge u based on your background 1st before they really know u, that is real world. Another thing is the network provided by the top uni is very valuable, do u ever wonder how ppl can get into Goldman?