In my experience (through DXR-10 and similar), more than a real valve amp.
What I mean by that - speakers cranked it sounds amazing, just as much if not more satisfying as the real thing, is it exactly the same? No it's not there's definitely a slightly different feel, but I'm comparing against what I started off gigging which was a full Marshall Jubilee stack - I don't think you'll ever get a PA to feel exactly two 4x12s absolutely flat out - nor would you want to, we all have tinnitus for a reason.
But the sound and experience, especially with a band? Absolutely you won't notice the difference at all in reality.
Why do I say 'more so' - you get a much more even volume/satisfaction ratio in my experience.
With Fractal I can get a very enjoyable, satisfying tone at whisper volumes - the volume control becomes just that, ok the speaker will start working harder, your perception of frequency response will change and the guitar will vibrate more and become more alive. But the base tone will be consistent.
I've never, ever had that experience with a Valve/Tube amp - and that authentic 'low end thump' you describe just isn't easy to get at sane volumes