Cambridge vs Oxford MPhil Economics

got accepted into these 2 programs and don't know which choose. My long term goal is to work in BB S&T then maybe hedge fund/top MBA in US if i want a career shift. Here are my requirements:

1) Which is program is better in terms off prestige/brand name on wall street? 2) If i do decide to go into a top US MBA, which is viewed more favourable?

Just as an aside, i did LSE Maths and Econ undergrad and am NOT interested in pursuing a econ phd.

(Oxford's mphil is 2 years whilst Cambridge is 1 year. However, i don't really mind studying for an extra year.)