Well I will tell you a couple of differences - walking basenjis you typically have 1 boy one girl - and stay away from other dogs. I can walk 2 or 3 bigs and 1 little and they just walk along - not as dog aggressive as some basenjis can be - still as food aggressive. Similar play styles - butt up. Since the basenjis at my house a Seniors - once the bigs get BIG I don't usually let them play together because a 2 year old big anything and a 10 or 15 year old anything not a good combination.
The hardest thing to get used to was - they bark. They are VERY attentive to everything outside of the yard when they are out and need to alert me.
A 57 lb dog in your lap is heavier than a 20 lb dog and takes up more space. Like basenjis I have some that are on your lap, some right next to you and some within arms length in case you drop something.
Like basenjis - they are a female led group BUT they don't seem to have to have that continuous discussion with each other on who is in charge.