Are there players that don´t play with a 4betting range 6max 100BB deep?
Saying you only call/fold to 3b. You don´t 4bet.

• You can use your postflop edge
• It has less varience
• you save yourself from stupid preflop wars, 4bet bluffs and weak 3bet calling ranges and tilting flips you always seem to lose

What is the downside to it that is not covered by an upside?

Serious question. I really don´t understand it.