For a lot of today's game we were almost back to where we were in the autumn, in terms of style of play. It petered out at the end and we ended up defending deep to protect a 1-0 lead, which we very nearly lost despite that, against the team who are bottom of the league. That's probably why the OP felt it was a bit of an anti-climax, I thought so myself a bit.
I think we all realise our problem is converting our own chances, a slight improvement on that front would make games like today a whole lot easier to bear towards the end.
We are bottom of the shots at goal table but that isn't the way the side plays. Despite a low number of shots at goal we're 4th in the PL for "big chances missed". That's because we get in a lot of crosses (we're 4th in the league on that stat too), and those are usually from good positions, not hopeful long diagonals.
Sharp's goal today is, I think, only the third headed goal we've scored all season (?)
I still think we're over-performing and it's fantastic what the players and coaching staff have managed to achieve. It's a proper team and for that I am grateful, even if I think with the current squad our level is actually a couple of places below where we currently are in the league.