I think I may need an Art Clean Box Pro. Just sitting here watching The Chronicles of Riddic, non-Bluray (AMCHD) and I've got the volume on my receiver turned up to -24 which is where we usually have it when watching TV and I'm not even seeing the first blip on the Input Level indicator in the iNuke software. Reciever is a Pioneer VSX 1120k. My LFE settings were turned waaay down before. Right now I've got LFE set to 0 (high as it will go) and the SW gain set to 0 on the receiver (goes from -15 through +15).
Where is the attenuator on the iNuke set? Don't be afraid to turn that all the way up. Unlike a subwoofer amp that takes the signal and boosts it these take the input signal and cut it - setting it all the way up is basically just running the signal straight through unmodified (in other words there isn't any down side to turning it all the way up ). I'd also try the SW gain on the receiver higher before spending the $ on a cleanbox.
Couple thoughts on your settings. I'm not familiar with the iNuke software but it looks like you've added a low pass on the sub around 100hz. If you're crossing to the sub with your AVR you'll want to turn the low pass off on the iNuke as it will only mess with the actual crossover. Also the EQ you added looks like it's just basically boosting the entire subwoofer passband