2.10ghz t6500 is faster. (1mb more cache in a notebook is a good boost)
By the way check if there is compatibility problem changing the CPU`s cause in laptops for example in HP the motherboards are coming registered for a type of CPU. Hope this is not a problem with ASUS laptop , a test will let as know.
Have fun (dont miss any screw i have found that the hard way
) and good luck.