When the terrorist organizations chant "From the river to the sea" they are clearly calling for the forced removal (at best) of all Jews from the land.
A political party that calls for "Israeli sovereignty between the Sea and the Jordan" it is clearly a rejection of the "2 state solution" but that is not a call for the removal of an ethnic population from the region. One critical difference here is you can disagree with that political party, vote them out of that government even, and express full support for a 2 state solution with out being raped, or killed. Somehow I doubt Hamas would allow that.
Israeli a western democracy has an actual framework of secular law and a history of respecting the rights of people including Arabs, Gays, Women ect
Hamas is a terrorist organization that has a history of authoritarian control, rape, murder, and no framework for respecting any individual rights at all, you bow to the most draconian interpretation of Islamic law or you die.