Because the individual landlord can operate more efficiently, individually owned residential properties within an owner occupied comparable complex will USUALLY be a better value tor the tenant. If you want confirmation of that value proposition, forward your specific property information and I can do the comparison for you!
Not much difference if the owners are educated about their market places. A small landlord may be able to be more flexible on tenant choices, and that could, I guess, get them a higher rent, but it will be nominal.
Real Estate as we all know is location, location, location. Because it is a landlord market almost all landlords are aware of what they can ask for monthly rent. The only thing that will affect the rental rate are finishes and amenities regardless of complex and individual landlord.