WD My Net N900 router what is FasTrack Plus?

I am thinking of getting this 11n router

http://www.newegg.com/Product/Product.aspx?Item=N82E16833146005

I spent an hour looking at 802.11n routers and I think the WD My Net N900 HD Dual-Band Router might be the best bet, since it was designed specifically to accelerate movies, video and gaming. I found this pr from them

http://wdc.com/en/company/pressroom/releases/?release=6baee492-de33-45ba-985e-81097f2b8d3f

They mention ???The exclusive FasTrack Plus technology provides intelligent, real-time traffic prioritization for simultaneous HD and 3D media streaming and online gaming.???

So what is this FasTrack Plus really doing?

If this something that other routers do?