Comparing the Eastern Catholics and the Western Orthodox is almost impossible to do although their names make it very tempting to assume they are just eachothers exact counterparts.
Western Orthodoxy is an attempt to baptize western Culture... make it Orthodox. The forms and styles may be western, but the doctrine is to 100% Orthodox (and yes, of eastern origen, mainly because we were not able to have a proper development in the west so, as of yet, we have a very small feel of how Orthodox doctrine might have been expressed in the West, so they have to depend almost entirely on the Eastern Saints because of the Schism. Orthodoxy is not so much the clothing and the looks (although there is a certain mentality and spirit that must be common among all of our rituals, regardless of Rite) but about the common doctrine we express.
The difference with Eastern Catholicism is that it took people who were Orthodox, had them (by their own willingness I must assume) be put under the pope, accepting as VALID all Western beliefs, many of which were honestly incompatable with Eastern thought (even if they didn't have to teach them) while still being allowed to hold on to their Eastern Way of thinking (even when incompatable with Western teaching).
This is simply not so with the Western Orthodox Church. These are people fully willing and desiring to adhere to the wisdom of ONLY the Orthodox Church (and by obligation of Historical events, Eastern, other than preschism Western saints) and are not in anyway to integrate Western beliefs into their doctrine, for their doctrine is our doctrine and our doctrine is their doctrine. Judgements aside, the origin of these two Rites is not simply the antithesis of the other. One is fully and integrally a part of the Orthodox Church with no contradiction to "work out" (at least not in theory, as to abuses, I don't know if their are... but differences in theology would be seen as a problem to be solved, not an issue to be compromised on), the other was grafted on the the Catholic Church who has certainly had a number of issues to "work out" over the centuries.
I don't know if I'm explaining myself right here. Do you see the difference and that it is very fundamental? I am really not trying to defend one more than the other (at least not in this post). Depending on the person, one could see the Eastern Catholic situation as more noble while another may see the Western Orthodox situation as more noble. But either way, they hold very little in common. (and this post really doesn't serve to refute or defend either movement.)
John
