Does it make sense for my Federal Wages and SS wages to be the same if I have nonzero DD values for insurance?

The ;codes you mention (AA, C and DD mean the following):

AA—Designated Roth contributions under a section 401(k)plan

C—Taxable cost of group-term life insurance over $50,000(included in boxes 1, 3 (up to the social security wage base), and 5)

DD—Cost of employer-sponsored health coverage. The amount reported with code DD is not taxable.

The Code AA doesn't change box 1,3 or 5. The code C adds the same amount to box 1,3,and 5. unless you are above the social security maximum

Code DD doesn't impact box 1,3,5