rather than trust mr DI (who can err like everyone), trust your ears..
put res at zero, and you will hear that the thump and decay parameters will do nothing at all at any setting..
Dean thanks to some of your old posts regarding the POD internal IRs, and certain statements of DI, recently I have been stimulated to investigate in more detail the cab dep parameters and found that the resonance (resonator) is actually an effect, and is applied by default to all the cabs..
in my signature below you can find an interesting doc on the "res" topic, and another one on the amp master volume parameter..
You are correct, I just listened and confirmed once the res is zero thump doesn't do anything. Getting back to the topic of this thread I almost bought a Kemper this past couple of month but somehow I ended up with a Black Star HT-5r 5 watt tube amp. I turned a closet in my home Semi Studio into an isolotion CAB using Pro quality insulation and sound absorption. A small 1x12 cab goes in there with a mic. I get amazing tones for recording and too many options as I also added a DI that sends a signal from the tube amp speaker out into Cubase where I've been experimenting with IRs. So it's real tube amp into Daw with IRs. The HT5-R emulated output also on it's on is an amazing cabinet emulator. I was pleasantly surprised that The POP HD 500 was pretty damn close and so was the Eleven. In a mix, it would be almost impossible to tell which is the real amp from the POD from the Eleven Rack.
The real tube amp into a DI once Cranked (in the ISO booth) and fed into the DAW is the simplest purest option and no matter how fatigued your ears get, the tone will almost always be good. The HT5 is loud enough to hang with a drummer even at 5watts,so with the ISO closet, I only hear the Mic signal going into the DAW into the studio speakers. I have to admit even though the benefit is there, the POD and Eleven Rack can also be made to sound and feel very similar, but the amp gives a good reference tone and helps in making presets that actually sound exactly like a miced tube amp. I also bought additional drive and distortions pedals to add more variety. I spent around $700 for amp and Pedals and with the POD or eleven going into the real tube amp, there isn't a sound that I can't get. I'm very happy with my decision not to get a kemper because using the tube amp as a reference, I'm able to make the POD HD sound as good as what I've been hearing from the Kemper or AXII.