Who is the real winner from the US-Iran deal?

After intense diplomatic talks at the G7 in Paris this week, Donald Trump surprised many by signing a memorandum of understanding with Iran. "Iran can never have a nuclear weapon. Oil is flowing. Gas prices are falling. Markets are roaring. A WIN for America and the world," the US president claimed on social media. But the finer details of the 14-point agreement have yet to be finalised. So who stands to benefit more, Iran or the US?