Ruger did a good job of making the new model Blackhawk less expensive to shoot by providing two cylinders with many offerings. Having two cylinders in these revolvers increases the fun factor too.

Eg.
I have a Blackhawk with both a 357 magnum cylinder and a 9mm cylinder.
I have a Blackhawk with both a 10mm cylinder and a 40 S&W cylinder.
I have a Blackhawk with both a 45 Colt cylinder and a 45 ACP cylinder.

Browning and Ruger are certainly not equals but both made significant contributions to the firearm industry.