Let's exclude the i5-2500k CPU since there are no known laptops that uses this desktop Intel CPU.
As for what is "better", it depends on what you want to do. However, generally speaking, Intel Core i3/i5/i7 CPUs (both desktop and mobile) offers better overall performance than any AMD CPU. A dual core mobile Core i3/i5/i7 is capable of beating any quad core AMD mobile CPU in games. That's assuming the two laptops being compared uses the same graphics core.
If you want a better answer, then you need to provide more information.