NJ-COJ - Tax Credit Paid to other Jurisdiction

I am not sure if I have been filing the NJ-COJ form correctly for the past several years. My wife and I are both NJ Residents. I work in NY and she works in NJ. I make 100K, she makes 50K. Ignoring all deductibles and so on, my understanding is that NY will tax based on 150K and so will NJ. When I fill out my NJ-COJ form, is Line 1 suppose to be 100K and Line 2 to 150k? If so, it would seem like I am only getting about 66% back from the tax amount that I paid to NY. 

 

Any help is greatly appreciated. Thanks!