You should hear it, when it's properly set up. You should hear a '72 Super Lead with 2 4x12s. There are some compromises however. All systems have their pros and cons.
Some systems are more generally useful than others.
In a world of apartments and neighbors, a speaker isolation cabinet is an acceptable approach to getting actual cranked power tube tone and cranked speaker tone. The Marshall stack deserves to exist, and it thrives. But the world has far too many 50 watt tube amps, and not nearly enough 0-5 watt tube amps and speaker isolation cabinets. I have deep compassion and sympathy for apartment guitarists who crave great tone, and I take their need seriously. And you have to consider the pros and cons of all combinations of related gear.