I believe that the metis would call it an incident because they would see it as a small footnote in history. The main problem was that they couldn't sell pemmican to the NWC because of the colony's leader. They blamed the HBC for the conflict because the of the aforementioned pemmican proclamation which the metis saw as an attack on the NWC as the NWC saw it too. The proclamation threatened their way of life because the metis could not sell the pemmican which meant they could not make a living.
The HBC would claim it was a massacre because they believe that since the British did not win the fight then the metis would only make a massacre. The British also have a history of twisting things to make the British reign supreme, they would call it a massacre because they wanted the metis to be seen as barbarians and needed public opinion low of them. This is shown by how after the battle they claimed the metis instigated the conflict and mutilated bodies after the fight. This persisted after their investigation showed that the metis did not instigate the fight and did not mutilate the bodies. They would also use the word massacre to emotionally charge people to believe the metis are monsters. None of the things Britain said was true but they always tried to lessen the power of the natives and metis. This notion of it being a massacre has persisted so much that it is hard to find a picture that is not geared to look like a massacre.
The Winnipeg free press would say it was a incident as well, after more information came to light it would be shown that the metis did not instigate the battle. In total 22 people died in total this is not enough to warrant a massacre name. The most significant was how the HBC tried to turn it all on the metis. All of this leads me to believe that they would call it an incident.
The main problem throughout history was the lies the British spread even after Coltmans report which clearly stated that the metis were not the instigators in the fight. The main reason it was called a massacre was British interference throughout history saying it was a massacre.
After the event of seven oaks lord Selkirk used his own private army to take fort William, which was the HQ of the NWC he remained at the fort for the winter and sent his men to retake fort Douglas. on the way they captured several smaller forts. this caused the NWC to take 5 HBC post, the war continued on for 5 years. Thankfully the Selkirk colony continued to grow steadily.
In 1820 the HBC started to mimic the NWC tactics, they pushed further in First Nation lands often losing money doing so. Because of all the pressure the HBC was causing the two companies merged in 1821.
References
The battle of seven oaks/2017. uploaded by Wikipedia, Available online at https://en.wikipedia.org/wiki/Battle_of_Seven_Oaks
My brain
-John

