Quote Originally Posted by Mando Knight View Post
It's the 70 power that's the problem. Only when Rock is two levels of damage over Electric does Power Gem deal more damage than STAB Thunderbolt. Signal Beam has more power and covers Hydreigon and Krookodile. For Gliscor and Ice types, Flash Cannon is superior to Power Gem.
Sure, but there are tons of Pokemon that are x4 weak to Rock, so even if it's just a measly 70 power, it's still enough to blast them. Like Volcarona or the millions of part Flying types (useful when conserving PP in-game, which Power Gem has plenty).

Also, remember that there are several Ice type Pokemon that are neutral to Flash Cannon. Like those pesky Water/Ice types and Rotom.