I will just say that you shouldn't choose one over the other just because of the jog wheels, as they are similar and do the same job. Preference to one comes down to personal choice and many people opt for touch sensitive I guess because it is easier and 'newer'. The only difference is that the pioneer has touch sensitive ones and the Gemini has mechanical button-operated ones. Jog Wheels: Basically the jog wheels do exactly the same thing on both controllers. I may also point out that the Gemini (in my opinion) has a better build quality, which is why it is slightly heavier. However there is not a huge amount of difference, just convenience. Size & Weight: The question you want to be asking is do you want portability in your controller? The pioneer being smaller and lighter is therefore more portable. Price: Both these controllers are in the same price range, therefore I will leave the price until the end once you have decided what controller you prefer.
OK, Lets digest the table highlighting important points.