Firstly, when you're looking at literally thousands upon thousands of goals these things will generally even themselves out however they do look at a number of variables on top of the the position the shot is taken from. It's these variables that lead to slight differences in xg depending on who is compiling the stats.
There was next to nothing in it outside the penalty. Utd's was around 2.5 to Villa's 1.6 and the pen is about 0.8 of that 2.5They don't upset me I actually wanted to know them because it looked to me that United created the better chances even though it felt like Villa were pushing
I agree it's not as easy to do with football than it is something like baseball but they are doing it. xg really is just the headline thing that we see and talk about but they go much further back in moves and look at each and every pass in the build-up to attacks. Clubs can tell you just how involved midfielders or even defenders are to the build-up of goals.
