To view results for the Bearing Fixture Right Click on the Results folder and select List Pin/Bolt/Bearing Force. This will give you the forces that the bearing is seeing. If you are restraining the outside cylindrical surface of a shaft tha twould be supported in a bearing than the Bearing Fixture is the better choice. Looking up the two different restraints in help can also give you a better description of how the actual model is restrained and may help you determine which better meets your needs.
The term used in the Simulation Fixtures "Fixed Hinge" has always sounded like an oxymoron to me, but I know the software applies a radial restraint=0 and an axial restraint=0 to the nodes of the selected entities. The restraint effect is supposed to be similar to what you might see on a door hinge. The bearing fixture is a modification of that: it allows for stiffness input in radial and axial directions for some flexibility to ground (whereas the fixed hinged is rigid with respect to ground). Hope that helps a little.