No, what gave them victory was the power of friendship and its cousin, the power of bad writing. The fucking retard soldiers stumble into Satoko's kiddy traps, and get ambushed and overpowered by Keiichi and Rena even though they have GUNS, a numbers advantage, plus advantages in physique, training etc. And the precog argument is bullshit, this was the first world where Rika and Hanyuu so much as knew who they was up against. It wasn't like she pulled a Midnighter there.
Really, there would have been a dozen ways they could have made the ending plausible, but they didn't. They chose to turn the series into Scooby Doo at its finale, a fucking outdoors Home Alone.