Average maximum Weaponry Yield

Type 12 Phaser Collimator Array - 12.5 MW per emitter segment
Type X Phaser Collimator Array - 5.1 MW per emitter segment
Pulse Phaser - 8.7 MW per emitter
Subspace Pulse Turret - 8.7 MW per emitter; 2088 MW per minute
Subspace Megaphaser - variable, untested max

Photon Torpedo - 18.5 isotons
Quantum Torpedo - greater than 50 isotons
Quantum Microtorpedo - unknown at this time
Tri-Cobalt Torpedo - unknown at this time