Less Stops but Same Time...?

I'm confused. And happy. But definitely confused. From the 14th of December, First Capital Connect will be running direct trains from Cambridge to King's Cross. This is proposed to tackle the overcrowding by removing the intermediate stations. So for a train running from Kings Lynn to King's Cross the route will be as follows:

Kings Lynn
Watlington
Downham Market
Littleport
Ely
Waterbeach
Cambridge
London King's Cross

Royston and Letchworth have been removed.

So what's confusing me? The fact that the train gets in at the same time as it did before. Why wouldn't it be quicker? Surely removing two station stops removes the needs of the train to slow down, stop, open the doors, check all are on-board, shut the doors, check for a green light, announce (occasionally), and then slowly pull away, accelerating to the previous speed. Not having to do all of this must shave about 10 minutes off the journey?

Apparently not...