There were now 6 Ifrits surrounding the group. Each of them had the capacity to blow up and spawn more clones. It was a losing battle.
One could argue that they were even more dangerous than Destruction Canzers. With them, Saviors was incentivized to kill a Destruction Canzer even if they knew it would regenerate its injuries. This would give them enough time to set up the Operator Construct.
But for Infection Canzers like the Ifrit, the Saviors were forced to stay their hand. If they killed a hundred Ifrits, three hundred more would spawn in their place. It was much better to keep defending rather than attacking.
Is that why there are three tanks and four mages?
Mages didn't have the best destructive power out of all jobs. But they were completely suited to fight Infection Canzers. The Mages could spread out an attack to thousands of enemies, which weakened their damage output just enough to cripple the Canzers without killing them.