Anyway, there is no way to be redeemed sooner than others nor more than others because we creditors are all equal under this procedure by law even if we sue them outside Japanese jurisdiction.
Depends. What did their terms and conditions/TOS/etc say? Many contracts with corporations have explicit choice-of-law and forum terms, i.e. something like "In the event of any dispute concerning this Contract or the services sold hereunder, suit may be brought only in a court of competent jurisdiction in the State of California."
And/or
"Any dispute arising from this contractual relationship shall be governed by Delaware law."
Generally, the choice of law and forum clauses specify the venue and the applicable law, which is usually the same state and/or country/province/whatever.
Even when a country chooses to exercise jurisdiction over a dispute in derogation of a choice of forum clause, courts are usually deferential to choice of law provisions, as the nature of a choice of law clause essentially incorporates the relevant law into the contract as part of what the parties agreed when signing it.
It looks like the Gox fiasco is about to be litigated in multiple jurisdictions, so I guess we'll see how this all plays out in reality, but it'd be nice to know what Goxers actually contracted for when they clicked past some TOS to sign up without reading it.
I think you're misunderstanding the point he's trying to make. You can sue in another jurisdiction for negligence, conversion, breach of contract, etc and win, but your judgement doesn't give you a superior claim in the insolvency proceedings (and under UN model law many nations actually take into account insolvency proceedings in another jurisdiction when determining litigation in their own backyard).
MtGox is actually prohibited by law from paying any of their creditors at this point. The insolvency is taking place under Japanese law, which effectively means that MtGox assets are now under the control of the Japanese legal system (via those appointed by the court). No-one's getting more than other creditors unless they can establish themselves as a preferential/secured creditor (under the criteria required by Japanese law) or unless they pursue assets which aren't under the control of the Japanese legal system.
Also, the point of litigation is rarely to go to trial. In the vast majority of cases the plaintiffs are hoping to force a settlement offer - something insolvent companies aren't in a position to make without the approval of the courts in the jurisdiction where their insolvency proceedings are taking place.
What people seeking to sue in other jurisdictions are hoping to do is inflate their claim by punitive/exemplary damages in the hope of recovering a larger portion of their losses than other creditors. It's a trick as old as the book.
The supervisors are private lawyers but appointed by the court in regard to the case.
So they are paid by the court and they are completely neutral.
This is kind of interesting because elsewhere the fees of those appointed by the court are paid out of the insolvency estate (the hourly rate they can charge is set - it's hundreds of dollars per hour here plus additional fees for administrative staff, accountants, etc). Are you saying that even if this takes thousands of hours of work to sort out (which it may well do) and the cost runs into millions, the government will pay for that and not a cent of those fees will come out of the remaining assets of MtGox?