Tribes as Goliath, States as David
In our 2005 book, Indian Gaming and Tribal Sovereignty: The Casino Compromise, we discuss how the perspective that tribal sovereignty places states as a disadvantage does not adequately take into account tribes' legal and political status and is ignorant of some 200 years of federal Indian law.
Here's another example of an editorial decrying the "uneven playing field between federally protected, sovereign tribes and state governments" (and last we checked, states enjoyed federally protected sovereign status as well . . . .):
Law Governing Indian Casinos Needs to Level the Playing Field (Shreveport Times)