When comparing the CPUs, you have to focus on the specific models. So you can compare Intel N100 and Intel Core i3 N300 and N305, because they are members of the same series Alder Lake - N.
The Alder Lake - N is a family of entry level processors, but these CPUs can provide a good performance and cover the basic needs.
Intel N100 is a CPU used in thin and light laptops. It has 4 cores, 4 threads, maximum turbo frequency 3.40 GHz and TDP 6W. It is a successor of N5095.
Intel Core i3 N300 is a CPU used in thin and light laptops. It has 8 cores, 8 threads, maximum turbo frequency 3.80 GHz and TDP 7W.
Intel Core i3 N305 is a CPU used in thin and light laptops. It has 8 cores, 8 threads, maximum turbo frequency 3.80 GHz and TDP 15W.
Simply said, Intel Core i3 can provide better overall performance than Intel N100.