They were the equal to GE in terms of the range of what they produced. They even had CBS to match GE's NBC.

A problem was that at the end Westinghouse's strongest business divisions (ones that bore the brand) were not consumer facing and strong units that were (like CBS) didn't really carry the Westinghouse name. So over time the brand faded.

In the 1990s, GE which actually grew stronger as a brand as it got rid of its consumer facing businesses like consumer electronics (radios and the like). To replace the consumer recognition, remember all those ads in the Jack Welch era promoting GE products that your average joe Blow would never buy (MRI machines and such). Sure they had to create that equipment but if they didn't advertise would you know what brand your doctor used for a medical imager.