I think he is refering to the uncompressed spring height. Uncompressed my OME rear springs were NOT as tall as the stock ones I removed (Since I hired someone to install the front springs, I did not compare them). The rear OME springs have two more coils as I recall and the wire diameter was larger. I suppose that translates into stiffer springs, but the ride comfort is not compromised at all.
The OME springs gave me more lift than I was expecting (which is nice) but, I am sure they will settle with time.
I have not experienced any "topping out" since the installation, though I do think I have some bushings that need attention in the rear.