Personally, I think the whole xG debate is a sign of the times. People want 'science', 'facts' and 'objectivity' (or so those who decide which stats you get believe, anyway). If you enjoy that, more power to you. For me, football is all about perception and nothing beats watching the game, preferably in the stadium. History is full of examples of donkeys being made to look like supermen by astute managers because, no matter what game theory tells you, a player will never be the sum of his stats (just ask Lukaku).
As for the game itself, it was fairly enjoyable. We really looked like we know what we're doing. The players didn't lose their nerves when Soton scored on their first shot of the game and that's a good thing too. I also think we looked more fluid than last season, with different players able to make things happen in different areas. Judging by this game, it looks like we have different options to deal with a problem and that's good news. Now, it's just one game and it's just Southampton. Only when the schedule gets more busy will we know if we're really up for it but, at least, it looks like we will be challenging for the Top 4 again which, one year ago, seemed like a dream.