The Apollo command module had a diameter of about 12.8 ft (which I assume is pretty close to the diameter of its heat shield). However, the heat shield for the new Orion spacecraft is a little bigger, at 16.5 ft (again, the diameter of the vehicle itself).
Orion's heat shield. Img credit space.com.
We know that for Apollo 13, the ideal angle of attack was no shallower than 5.3 degrees, and no steeper than 7.7 degrees. I assume that the changed dimensions of the Orion spacecraft make some differences to this - so my question: What difference does the surface area of the heat shield make to the reentry angle?