For me it IS the same and I use it often for exact this purpose without any problems. What exactly is in your eyes the problem?
Here an example from my images:
Just using Clone Tool, no additional layers, no other plugins, ~2 minutes:
Tipp: Change the Opacity/Alpha of your primary color to ~128-150, the Hardness for your Clone Brush to Zero (0)% and always choose a brush width bigger than the part you want to make disappear. For example: if this part is 15 pixels wide you need a brush width of ~35 pixels except the part is located on a very sharp edge between two different colors or light and shadow.