Statistically they look the same, so this is really not an easy match for them. Both Chelsea and Manchester City need a win to maintain their position. But in terms of appearance, they can also be said to be the same when we look at their statistics in the English League this season.
However, Manchester City has another advantage, yes they will play as hosts and usually the team that plays as hosts is more favored to win the match. On the other hand, they also have to play a match in the Champions League first which will be very draining.