I would say that I agree that Mexxer-2 and Lutpin are strange choices for being in the Default Trust network. I would also say there is a high chance they are the same person.
First off, don't even tell me this "backstabbing" is because of the reason I think you're sore about. Also I'd like to see your proof for me being an alt of LutpinOn the other hand, it was fairly rare that a rating that I left was inappropriate, and as a result very few ratings needed to be removed that I left and many of the "QS" threads resulted in additional people looking at the evidence and leaving additional ratings on those complaining.
Well you just had a bigger league that you could fall back onto 
I would note that a good number of the "Mexxer-2 and Lutpin" threads have resulted in no additional negative ratings being added to the accounts of those complaining, and in a decent number of instances the ratings have been removed.
I don't remember any such thing with my ratings , although yes I did remove rating for leowonderful as he closed his "Joke ponzi" ASAP after I gave him a neg. And from the PM he sent me, I just felt bad for him