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X-Scissor is the third most powerful physical Bug-type move in the game, after Megahorn and Attack Order. Unlike those, though, it has a wide distribution, as a TM move in the 5th Generation. While perhaps less popular than U-turn, it will not force the user out, making it a better option for Pokemon with setup moves, such as Swords Dance. However, do note that Technician Scizor will prefer Bug Bite, as it has a higher Base Power factoring in the Technician boost.
Attack Order is a more powerful move with a higher critical hit rate.
Megahorn is a much more powerful move with lower accuracy.