Tucson and Sportage are same vehicle under skin. Engine , transmission, suspension. Internationally Tucson and Hyundai starts around the same prices , plus and minus here and there.
I suggest you wait to make a decision. Personally I think Tucson might be little higher in price but again we don't know what options/ frills Hyundai add to it comparing Sportage. It will carry same engine as in Sportage and same AWD setup.
Globally the current generation of Tucson and Sportage will replaced this year although we will have the previous generation.