The ballistic turret and brx/brh reticles satisfy different needs and preferences. In a general sense, neither is superior to the other.
The ballistic turret offers infinite flexibility with respect to calibers, load data and where the markers are set. Likewise, operators can change their loads and adjust their turrets themselves, without having to pay for a new turret to be engraved (such as with Leupold or Huskamaw).
The other advantage (for some) of the bt is that by using a plex reticle (which most models come with) the operator is presented with an uncluttered sight view - for some shooters, a bunch of holdover lines can be confusing in the heat of the moment.
The primary disadvantage of the bt system is quite simple: garbage in, garbage out. In other words, if it isn't set up correctly (load data, accurate zero, etc...) it will not function optimally. Fortunately, setting up a bt is quite simple.
To address the issue of the bt having only three range markers, this can be remedied in two ways.
First, aside from the ranges set for the green, yellow and red markers, an operator can use the ballistic computer to generate the clicks for a variety of ranges and simply enter them onto a sticker and keep them on the rifle.
For instance, assume the bt is setup as follows: zero = 100, green = 200, yellow = 300, red = 400. If you also want to know the settings for 350, 450, 500, 550, etc...use the calculator to find out the clicks and add them to your ballistic sheet/sticker. Thus, in the field, if a target is 450 yards, you refer to your sticker, which might say "450 = yellow +3 clicks). You can determine any number of additional ranges in this manner.
The second solution to the limited nature of the three markers is even simpler, although a bit limiting: Swarovski will soon engrave custom turret caps for the bt scopes, based on the load data you supply them. Hence, if you want a turret with the ranges listed on it (as per a Leupold or a Huskamaw) you can get that. However you still have the advantage of the flexibility of the marker system. Outdoorsmen also currently produces range caps for Swarovski scopes.
With respect to the brx/brh reticles, the brh was introduced to address comments by operators who found the brx lines too thin and hard to see in low light or against a dark background.
Both work on exactly the same principle: by entering your particular load data into the Swarovski Ballistic computer, you can generate a ballistic table that tells you what range each dot and line on the reticle corresponds to. The beauty of the Swarovski system is that you can play around with the variables (load data, zero ranges, magnification, etc...) to arrive at a ballistic table that meets your precise needs.
In the end, both systems produce the same result: empowering the operator with the tools and flexibility to setup their scope to deliver a bullet right where they want it.