I haven't seen the rope, so this is pure speculation, but the symptoms you're describing sounds like what happens when companies try to make rope cheaply. If they loosen the twist and the braid in the rope it takes less fiber to make a long rope. If you have a daughter you'll understand this. If you braid her hair it's shorter than if it's just hanging in a pony tail. Good companies will make the rope the right way and just charge what it's worth. Then there's cheaper companies that make rope that might look good (and they often design the color schemes to be similar to what the good companies are doing- possibly explaining why beal's baobab rope is the same as Yale's red/white XTC) then sell it for a lower price.
I guess tree work is the same way!
The looser rope would have less fiber in it, would weigh less, and would be a lot floppier/prone to tangling.
I'd like to try the Beal rope one day to see how it is. Let me know if someone finds it being sold in the US.
love
nick