The Rialto uses the Ingenium flush (that means it has a standard 2" flush valve with siphon jet flush)
This model toilet normally performs on the lower end.
I do remove my share of them.
Some of it depends on homeowner usage.
Some people are tougher on these than others.
If someone were to get something similar to it, but with better performance, it may be something like the Toto Supreme MS863113