The process has been streamlined to a certain extent, and recently, by Pope Francis.
In addition, there are
so many variables in nullity cases, and
so many different types of situations out there, that it’s not particularly helpful to compare any one nullity case to any other one (especially since we don’t know the details of either of the cases!).
Umm… the Orthodox Churches
aren’t in communion with Rome. That’s the whole point of them remaining distinct from the Catholic Church.
Are you, perhaps, thinking of the Eastern Rite Churches (Ukrainian Catholic, Maronite, Greek Catholic)? They
are in communion with the pope – which makes them ‘Catholic’! – but they do not allow “divorce and remarriage”.
You’ve never worked in a Catholic parish, then (or, perhaps in any situation in which one deals with the public), have you? Let me assure you: people – even Catholics!

– will say whatever is necessary to say in order to get what they want. The human ability to rationalize is quite
stunning. (“Oh, it’s ok if we lie to our priest… it’s for a good cause, anyway!”)
Because it acts as expert testimony. Remember, what the tribunal is looking for is proof that there was an impediment or missing consent at the time of the wedding. One’s ‘testimony’ to a marriage counselor could provide
precisely that kind of evidence.
With all due respect… I think you’re using the term “valid” in a different way than what the Church means when it speaks of “validity” of a marriage.