I visited the Byzantine Catholic church near me a few times. Yes, it was quite short. You can find lots of rants at a certain other eastern Christian forum about why the revised divine liturgy is an atrocity... I didn't really pay too close attention to differences, but yes, it was shorter.
Also, I notice not many people at my ACROD church cross their arms at communion, so this might be a Carpatho-Rus thing rather than a Byzantine Catholic thing.