I've seen these numbers quoted a ton of times. I really have no idea where they came from but they are very wrong.
The B16 and B14 use the same spring, and similar valving, but B16 can go much stiffer and a tad softer through damping. I don't have the damper numbers handy, but I can hunt them down if anyone really cares. When I got my B16 kit in, I actually measured the springs, verified against Bilstein's published specs on their site (They don't give you spring rate, but they give you every other bit of detail around the spring to be able to calculate the rate yourself), and I calculated the rates as:
Front: Progressive 302-398 lbs/in
Rear: Linear 346 lbs/in
This thread has more information about specific kits, and I posted on page 4 to correct the mis-published information on the Bilstein and add more detail on the Ohlins.
I've also heard people say "The B14 is just the B16 on the middle setting" and that also does not sound right. I've ridden on the B14 and they're about as soft as my B16 are on 3 of 10 clicks front and rear. That's a sporty feeling on the street, but you will absolutely feel potholes, expansion joists, cracks in pavement, and slowing down for driveway curbing and speed bumps is a must. On 0, the B16 are underdamped, but feel very nice on the street. Most of the time I run 1 in front and 2 rear, with occasionally going to 3/5 when going for a fun spin. I haven't had them on track yet (so many canceled events this year), but I suspect I will be running 7/9, 8/9, or 8/10.
Hope this helps