different consumers - different feats/performance balance/priority.
which is(flexibility) is key ROS advantage.
one of my rb751's i handed/gifted to charity project/installation - runs 65/12 subscription without complaints(basic browsing load dominate), despite Huge amount of users. but most home users do stress their CPE way harder nowadays.
Complaints? I'm sure you have some form of monitoring in place to actually measure usage and load? Otherwise that might not be a good way of deciding if the product is a good fit or not.
No complaints is always a good thing though. But I like to scale my setups to never go above 75% CPU usage so I know that it can handle the config with ease.