Agreed. You can see in a lot of sources that small "freighters" like the Millenium Falcon, Outrider, Ebon hawk and Twilight all seem capable of manouvring on a par with snubfighters.
As to why the designers thought that was necessary, as opposed to better cost effectiveness or increased cargo capacity..... best not to ask. After all, these ships are designed for Totally Legitimate Purposes OnlyTM....