It is always the case, that a student can get federal aid upon completing the FAFSA and being eligible for federal money, even if CSS PROFILE or other fin aid forms result in an EFC greater than COA.
The other applications are to determine eligibility for programs other than PELL, Federal subsidized loans, federal work study and other money sources that use FAFSA only. It is entirely possible to get PELl money and such but not eligible for school or other grants that take into account info like NCP financials, family business, Primary home equity