Does anyone remember when it was said that Elite's have the same combat skill as Spartans? That doesn't seem to be the case anymore.It never was, chief kills tons of them every game.
In FoR chief notes the elite is as strong as him, but the elite in FoR was also abnormally large, more in line with a 343-style elite. Mere physical strength does not determine one's usefulness in a modern or sci-fi battlefield with guns.
As for the particular cutscene, the elites were not expecting a fight, especially from all of them. Contact Harvest made it clear the elites were needlessly arrogant in their treatment of the brutes. Most of the elites in the cutscene have their backs to the other brutes, and the elite Atriox killed was probably confident that his energy sword + allies could kill Atriox before he could do anything (if he did)
The balance of an RTS is also largely unconcerned with canon. RTS games usually try to write their lore around the units, not the other way around.
I didn't say the elites matched them in strength but in combat skills. It was talked about alot in the past about how the reason Humanity did so well against the Covenant is that fact that their religion and sense of honor held back much of their power. The Covenant's reluctance to do X and Y and odd statue of leadership allowed us for fight them effectively.
Even in terms of canon in Halo 2 the Arbiter goes through far more challenging missions then the Master Chief. While MC fights standard Covie forces in the city streets of old Mombasa, Thel is fighting a commando unit of Sangheili with sentinel aggressor allies.
Elite's are extremely well trained warriors again rivaling Spartans, but the Spartans didn't have the weight of religion or honor bogging up their attack which gave them an invaluable asset in battle, the ability of freedom. This with how well they knew and cared for each other turned a team of Spartans into what is without a doubt the most effective fighting force in the modern galaxy. as we see throughout all of Halo, many within the Covenant willingly will lead their own troops to death because of status and or general annoyance, I.E The Flood. That along with the fact that elites rarely fought in entire squads. One elite, 5 grunts and a jackal is nothing compared to 6 Spartans is without a doubt a ROLFstomp. It's even expressed further that elites found certain tactics just downright cowardice, even shown in Halo 5 by how they insult people for taking cover.
It seems like their sensibility is intact just not their combat skills which is odd. You can't know one without the other. Some stuff is without a doubt listed under plot armor, a sad truth of any tale but when we don't look at those characters who the plot demanded needed to live for X reason we can see the truth of skills. Comparing the best Spartans i.E Locke, MC or Nobel 6 to the average elite is just insane same with comparing Rtas, Thel or Ripa to the average elitem, who much lik te hte spartan heros just as easily have plot armor in X situation.