Creality 1.2.3 slicer vs Cura 4.6.1

Ender 3 pro
New at this... many questions. How much difference between slicers?
The models (gcode) that came with the printer produces beautiful prints, but other models are imperfect.
It appears the Creality slicer has some problems.
Benchy sliced with Creality has defects, but sliced with Cura, fewer defects.

Also how much difference between filament mfgs?
I would have thought PLA is PLA.

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