>>36030085One's still strictly exclusive, because Long Reach would be amazing on the right mon.
Bulletproof is better overall because flat out being immune to a choiced mon forces a switch as well as the potential for more moves to be added to its immunity list in the future.
The ONLY thing that Long Reach could really benefit the most from is a Z-Tailwind set with 100% Crit Leaf Blade+Shadow Claw & even then good luck finding time to setup.
Dec needs Low Kick damnit