Here we see what happens when an unfocused Necron list comes up against a tuned tournament list. In fairness to Dan, this was his first time playing Crons, so that was a huge factor. Also, I had a few lucky night fight roles early game that made a huge difference.
The thing to note there though, IMO, is that you really need to build a solid list with Crons or get pummeled. Like Dark Eldar, they are an army that are very easy to lose with, and very easy to build a bad list with. You must have synergy and a solid plan with Crons to make them work. If you do, they can hold their own, if not, they will get smashed pretty quickly.
Oh, and it is 1500pts, not 1850 as it says in the video.