Happyjew wrote:
This cannot be proven.Since it cannot be proven, it cannot be used as evidence.
It can't be proven for certain but one can infer that they are of the same strength due to the effects they produce. According the wiki...
"Taking fire from the Type-25 DER can cause severe second, third, and in some cases, fourth-degree burns (a fourth-degree burn completely burns away all flesh, leaving only bone tissue)."
"Against UNSC infantry, the Type-25 Rifle's lethality is considerably greater than its counterpart, the Type-25 Directed Energy Pistol, due to the faster rate of fire, injuries inflicted to the victim are severe third-degree burns, with the wound being cauterized instantly upon impact. Even near misses will produce severe burns and heat trauma. Should the plasma impact an object, the impact can create fragments that may come into contact with a victim, with a crippling or lethal effect. Generally, two hits from either a Plasma Pistol or Plasma Rifle will kill a light or non-armored target.".
(The Type 25 rifle is the Plasma Rifle)
While they do not work along the same mechanisms the Covenant Plasma Rifles produces similar, if somewhat less potent, results. Lasguns are described as burning holes into people and, like the Plasma Rifle, cauterizing the wounds they create. Plasma Rifles do seem better suited for killing unarmored targets, to be fair.