The magic of cluster/ladder is pyschological (and perhaps some physiology CT?) - you increase performance for rest of workout by making weight feel lighter, more explosive, dominate more.
On days where I am "neurally off", I also have less pump, and less desire to train. WHen I do clusters, ladders, ramps more likely than not I always "turn on".
To me that's the magic...it forces me to get turned on and have a great workout/performance (80% of the time, some days nothng works lol).
Alternatively, straight sets don't do that for me and if I do one hard set (vs. multiple "practices", waves, or clusters) the PERCEIVED exertion is a lot higher. I don't know if that's good or bad...the lower stuff feels better (easier) but in a good way...
Thoughts CT? Basically - should most training sessions have this sort of CNS activators (or am i confusing CNS turn on, which can be done with jumps and some lighter explosive stuff/bodyweight with waveloading/clusters which might actually be done AFTER cns activation haha)