Gyro revival...
100 blades is a well announced, obvious and kittenty cleave, so yes the engie probably pumped up all the damage reductions at that time.
the engi gyro can easily be cleaved down, and a lot of times the engi is helping to revive too so the buffs are spread to the gyro.
Ive been running the taunt on beserker trait line since and running the +3% damage trait line instead of remove condi cleanse for these moments.
Without it you wont do enough cleave damage but with it if your position is right you can potentially stop it depending on the health of the engy or ranger.
alright, maybe I should spend a little time playing engi to get more familiar with combos that allow that…cds and etc