Those two are profoundly different types of bikes, even in the smaller engine sizes.
It would help if you knew what your preference was, either by form or function, otherwise there is a long list of learner legal bikes of varying quality size looks and performance.
Short of sitting on both types (or in fact any available models at shops), you can google sports and cruiser types and look at the photos of people riding them. It will give you a small idea of the ergonomics.
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