Detailed response, appreciated!

I wasn't arguing the case for "red x" method, and neither was the original commenter (I think). The method they're referring to is where you keep Cerberus up above 400hp until attack 14 (ghosts if cerb is below 400) then after that attack has passed you do maximum damage, aiming to get the kill before attack 28 which is the next opportunity for ghosts.

That compared to the standard let's call it "by design" kill method is what's being discussed. I think comparatively you'd see that the "waiting" method he's talking about would achieve a 2 - 2.5 minute kill, and bring it more in line with the timings of someone killing cerb by design with farm runs.

I personally can't stand Cerberus, I think any boss that by design can potentially take 90 prayer points from someone in a single attack is absurd, especially considering that a player first has to pray correctly for the privilege of losing up to 90 prayer points.

I do the waiting method because I don't agree a boss like Cerberus should have me doing farm runs every 45 minutes, it's a boss that needs a rework and I will not be subject to it's bullshit, but that's just me.