Schwalbe nobby nic [vs] Bontrager XR 1

Hi,
I am currently using a pair of schwalbe nobby nic 26 x 2.1 and want to change to a faster rolling tyre.
Would a bontrager xr 1 (see link below) in 26 x 2.2 still be quicker???
http://images.google.co.uk/imgres?imgurl=http://media.trekbikes.com/images/products/medium/411123.jpg&imgrefurl=http://store.trekbikes.com/jump.jsp%3FitemID%3D2055%26itemType%3DPRODUCT%26path%3D1%252C2%252C4%252C461%26iProductID%3D2055%26bShopOnline%3D1&usg=__Aa0h5E7T0b_9ZfzAng9mQFTzznA=&h=180&w=169&sz=6&hl=en&start=4&tbnid=exyOn9TEU0xzCM:&tbnh=101&tbnw=95&prev=/images%3Fq%3Dbontarger%2Bxr1%26gbv%3D2%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-GB:official%26sa%3DG
Thanks
I am currently using a pair of schwalbe nobby nic 26 x 2.1 and want to change to a faster rolling tyre.
Would a bontrager xr 1 (see link below) in 26 x 2.2 still be quicker???
http://images.google.co.uk/imgres?imgurl=http://media.trekbikes.com/images/products/medium/411123.jpg&imgrefurl=http://store.trekbikes.com/jump.jsp%3FitemID%3D2055%26itemType%3DPRODUCT%26path%3D1%252C2%252C4%252C461%26iProductID%3D2055%26bShopOnline%3D1&usg=__Aa0h5E7T0b_9ZfzAng9mQFTzznA=&h=180&w=169&sz=6&hl=en&start=4&tbnid=exyOn9TEU0xzCM:&tbnh=101&tbnw=95&prev=/images%3Fq%3Dbontarger%2Bxr1%26gbv%3D2%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-GB:official%26sa%3DG
Thanks
0
Posts
Changing to a Racing Ralf or Speed Kings will give you a bit more speed, but with less grip so you may be back to square one.
The Nobby Nic rolls faster if you get the psi right. I'm running my 2.25's at 25 and 22
Along with my new wheel set i just knocked 17 min of my 2+ hour training loop so well happy tonight
Trek EX9.0
Viper Carbon Lite