The concept around equal high liquidity comes from the understanding that stop losses hold above these points.
In this example, price broke out of bullish structure and began to form bearish market conditions.
This would of course attract sellers, especially at the double top point marked.
The idea is simple, tackle the impulsive sellers before the trend continues.
You can see that price began to lure sellers in from the double top but then came back to take them out before continuing with the true move.
This type of move falls under all concepts of money distribution within liquidity and is definitely worth adding to your strategy.