Flutter’s results in recent years have been all about the US, and the 2022 results were no different. Where previously the story was one of potential, now the US is a fully-fledged success story. The parent group of Paddy Power is leaving its rivals in the dust. The situation Flutter finds itself in is strange. In the space of 10 years, a market is opening up — US sports betting — that’s likely to be bigger than that addressed by the rest of Flutter’s business put together. And thanks to the FanDuel deal, Flutter has put itself in a great…