After debuting at the World Cup, will expected points become more prevalent in rugby?

France, England and New Zealand all lost to South Africa in the knockouts despite in some cases comfortably outperforming them on xP

Ireland were nearly seven points better than the All Blacks during their quarter-final, according to Opta, but still lost by four. Photograph: Inpho/Billy Stickland
Ireland were nearly seven points better than the All Blacks during their quarter-final, according to Opta, but still lost by four. Photograph: Inpho/Billy Stickland