He's not inidually winnning us the league, but a puzzle piece in our best team to get us up there. Pogba injury just took away from the team.
Chelsea can make do with more midfield solidity as they're letting more space and more goals in and it's making it more difficult for them to see out game.
In possession, Huddlesfield cut the easy spreading to wing path well. In first half, the wide forward Martial was marked out of the game. Lingard couldn't keep width well. Huddlesfield forced us to go through the central which we're poor collectively as a team. Mata even at his best was not that good having men breathing at his back. Herrera Matic, even Carrick ain't gonna unlock this kind of compact central defensively shape (the game call for Pogba style of player. Other option is go long which we only have Lukaku. Fellaini can be a good help here. The first goal happened when Mata tactically felt the need to find some space for himself to get on the ball and get the passing going. He made mistake, but that's how good Huddlesfield defensively was.
Your prime example is one of few mistake, and when the team didn't set up best for you to pass. If you remember LVG games, there were plenty of times players were instructed to keep the passing game going and even in the end when we need to have a go for it, they just pass back when being pressed. Jones, Rojo, Carrick, Herrera, Schneiderlin, Bastian, Blind ... all took part of this back pass regime. That would get you better passing stats, does it matter at that moment, chasing result?