I'm comparing what is optimal for each if I slot their tank sets. I have to then tie in con and ins initim since they are not in the new set which limits space and options to pull in adherent with the new set. Even if I could pull it in it wouldn't address the MRR issues. I'm sure as I look longer I can find small tweaks to bring it closer but the item slots and omissions that were in prior set make getting everything to fit more difficult without doing substantial doubling or tripling up redundancies.
In either case I would expect my tank with a minor artifact and new tier of sharn gear to not only break even but eclipse a toon in all RL gear...irrespective of where the bonuses come from