Did some more experimenting...
I Know what you guys are saying...and it makes sense,but what I've taken from this,is that things don't really have to make sense,as long as it sounds good.The greatest proof of this,is the way the DT is originally set up,the path goes: full pre-amp,power-amp and cab model ->DT power-amp ->DT cab. This doesn't make any sense,there should only be a pre-amp model to begin with,the rest is already there...why feed a power-amp+cab model into another power-amp,right?!
Thats why the first thing that I did,"trying to make sense", was use only the pre-amp models on the Helix.Despite the big output discrepencies some sounded good and some(high-gain models) sounded awful.That being said,I kept going through the different models in the Helix.The best results I've gotten so far,are with the full amp models,no cab...and it sounds really good,I wouldn't say better,just different and more realistic regarding the original amps.
As for trying to match the amps in the DT with the Helix...you can't really,there quite different.The P75 bright in tipology II for instance,is dirtier and more organic,I find,although I didn't think that was possible...never had any complaints about the DT not sounding organic...
The Rectifier in the DT which I love so much,although I must admit,it sounds awesome but nothing like a real Rectifier as opposed to the Helix Rectifier,the only reason it doesn't sound closer to the original is that you would need a power amp with more head-rom and bigger cab...I guess,but still not even close to the one in the DT.
So basically my DTs are destined to become power-engines like my Tech21.