I'm a big believer in stats and they certainly tell a story but devil is in the detail with this particular one...
Of the top half sides we've played at home - Man C, Liverpool, Leicester, Everton, Woolwich, West Ham.......we were ahead within the first 15 minutes in 3 of these games (Man C, Woolwich, West Ham) so it stands to reason that we would, from that point on, have less shots at goal. Defending well can mean different things to different people - inviting shots from low percentage positions is usually very smart defending. Even 'entries into the final third' can create an alarming stat at face value but done in a controlled manner - as we did against Woolwich and I'd claim for 95% of first half yesterday can be effective.
The problem we have presently is that we are so reliant on a) our strikers converting chances and b) our defenders not making mistakes. In Nov these things were both happening. Now, the reverse is occurring and we experienced terrible luck with the Son offside call yesterday. The latter should not be considered the most significant factor but it certainly had a big impact.
As per my previous point....last night was another worrying instance of creating very little once going behind especially without Kane to produce something from nothing.