I used to work with primarily B&R products, I'll do a little comparison:
Software needed to start-up a new machine panel of some complexity:
Rockwell - Logix/Studio 5000, BootP, ControlFlash, DriveExecutive, Networx Linx, and FactoryTalk View Studio are pretty much the minimum.
B&R - Automation Studio
Using a new product for the first time:
Rockwell - Navigate terrible website to try and download/install AOP/EDS/Firmware. Google search for how new product is configured and used in the program.
B&R - Open Automation Studio, go to Tools -> Upgrades, download upgrade related to new product. Insert item into hardware tree, click on it and press F1 for comprehensive documentation.
Replacing a drive:
Rockwell - Power drive up, use BootP to set IP for Eth/IP devices, install desired firmware to match project, for VFD, use drive executive to set drive parameters, install in machine.
B&R - Install in machine.
Starting up a new panel:
Rockwell - BootP all the Eth/IP devices, update all the firmwares you need to update, drive executive all the drives, do some power cycling, connect to PLC, transfer the program, transfer program to Panelview, troubleshoot.
B&R - Connect to PLC, transfer the program, wait for PLC to set all the IP addresses, firmware versions, drive parameters and the HMI to load up to the terminal from the PLC, troubleshoot.
Version Control:
Rockwell - Export project as L5X file before every commit. Weed through the thousands of found differences from each and every variable value when trying to merge. Accept that it is too difficult to do real version control repositories and just copy and paste to a network drive.
B&R - built in Subversion and Git support. Project is already saved in organized file tree of source code and XML configuration files. Easily manage project versions and multiple programmers on the same project.
Programming Environment:
Rockwell - Studio 5000 has pretty good ladder editor, and terrible Structured Text editor. Uses random words instead of programming wide accepted terms (tag instead of variable, instruction instead of function, etc). No pointers. No table editor for variables or structures and non-IEC compliant method for defining said tags and structures. Shocking small number of built in libraries/functions. No inline NOT in ladder.
B&R - Possibly the best text based editors I've ever encountered (better than CoDeSyS, Visual Studio, and maybe even Eclipse) making programming in ST orders of magnitude easier than Studio 5000. Text or table editing of variable and structure definition for speedy re-use and advanced users. Can execute batch scripts to automate programming before and after compiler execution. Can include non-program related documentation into project, like datasheets, specifications, and general notes. Built in libraries do everything to advanced PID and signal processing and more (orders of magnitude more functions available).
HMI:
Rockwell - I don't want to get into too much detail on why I loath FactoryTalk View Studio, but I wonder if they ever plan to updated beyond the Windows 95 appearance. The only things I like are the easy animation of objects and the ability to build an expression instead of just using a single tag for most anything.
B&R - Easy support for .Net based HMI, Web based HMI hosted on the PLC's own web server, or their native Visual Components (VC for short). VC is hosted by the PLC and a PLC can host many independent VC displays connected to both touch screens or as VNC servers (provides built in backup if your touchscreen dies and provides supervisor back-end HMI over factory network). Built in unit conversion and better graphics capability. Admittedly VC is bad at animation.
Website:
Rockwell - Hard to navigate and requires different login info for some sections. All product information is in scattered PDFs
B&R - Easy to use product catalog gives you detailed info on any product. Enter a partial or full part number in the search to easily find technical details, 3D models, etc. Enter a serial number to find out product and warranty information and if it was originally part of a set. Easily find any download you want in a clearly marked download area or on the side bar for related downloads from any product description page. The best website in the industry that I've come across.
The list goes on, but you get the idea. The long and short is B&R and a number of high tech competitors are far more polished and capable and cost less. Meanwhile, Rockwell keeps capability low to keep the learning curve low and rides on industry inertia.