Powernudge is easiest to understand as movement on the grid. Instead of only removing winning symbols and dropping new ones, the feature can shift the playing area and create new cluster chances.
Shifts and clusters
When the grid changes position, symbols can connect in new ways. This is why Sugar Supreme Powernudge feels more active than a standard cluster slot: the game is not only waiting for tumbles, it is also using movement.
Retrigger idea
Retrigger potential matters because it can extend the feature and give the grid more time to create useful positions. Longer features do not guarantee large wins, but they give the mechanic more space to work.
How to test it
Use demo mode and watch one feature slowly. Follow how the grid shifts, where clusters form and whether the movement creates extra chances. Once you see that sequence, the Powernudge name becomes much less abstract.