Salesmen and advertisements would sure have you believe so.
The only way to know is to pattern them, and to the best of my knowledge, none of the extended choke tube manufacturers have published any third party test data that shows extended chokes perform any better than flush chokes.
Only adverts that say the parallel section does this and that, and how the holes stop the wad, and this makes patterns better.
Of course, Teague chokes are well respected, and they have no parallel section at all.
Really, I don't know.
But I'd say, probably not.