While Megaplex is ideally endowed with the same power as the original Megatron, the Decepticons' true leader is no fool. Realizing that a being based so closely on his own nature and with equal power would be quite likely to make a play to permanently replace him, Megatron thus had his clones constructed with a failsafe device that significantly restricts their abilities. Thus, though Megaplex is easily able to pass as Megatron for short periods of time, his intelligence, strength, firepower, and skill are capped at levels significantly below those of the real Megatron. The deception is likely to work best on the battlefield, from a distance, or when Megaplex is following a strict script set by the original.
Megaplex prefers close-quarters combat, tearing into his opponents with electron sword and energy flail. For artillery he prefers liquid helium "Freeze Shells".
I used Universe Thrust for the torso, Universe Acid Storm for the wings, and thanks to Hater06, a pair of KO seeker legs.