This, in fact, was also a trap.
The reason was simple.
Tolimus... was lying.
His proposed plan was quite impressive and meticulously detailed. But it delved too deeply into regulating the damage received by both teams, "overlooking" a critical, very critical issue.
That is... how would they deal with the second enemy?
This was the fatal flaw. If they continued to use the old sequential attack method, they wouldn't be able to do anything to the remaining team.
And of course, that's because Tolimus fundamentally didn't want to do that. The entire plan was merely a diversion to mislead Pegasus.
Pegasus had been trapped by Tolimus in the illusion that she could gain significant benefits after she and her team eliminated another team. She didn't realize that what Tolimus was targeting was precisely her team.