There's a lot of very flawed views here. Op is correct, and constantly repeating 'group up' is getting really boring, and won't change anything. We are talking about time invested and reward gained. While you should definitely be playing for fun (like any other game), the time you invest should be worth it to keep you playing. I know exactly how op feels. Too many times this happened to me, and I also stopped qing after, because getting 1 emblem and 100 rp or less for 10 mins of actually trying is absolutely retarded and no game that holds to itself operates like that. People don't seem to realize that both sides actually lose in that case. One side gets no rewards (no matter if they try or not) and stops qing, meaning the other side also gets nothing.
And saying to such people to group up, well, what if none of my friends were online, or if they were doing their own thing (rvr, pve or whatever)? What if the balance was absolute ****? Why should I go to /5 and look for random strangers so I can have a normal experience in the game? That just seems like forcing people. Very few people play games like that anyway.
This problem of xp is even bigger in lower tiers. Just look at the astronomical difference in the example from op. And it's not like order did absolutely nothing. Healers healed, and I guess tanks did some tanking. Unfortunately we don't see how long it lasted, but whatever the time, winners got anywhere from 10-23 TIMES more xp? I can't but ask, are you for real? What game would expect to keep the players in such a case? No other game I ever played disincentivizes players more than that. 'You lost? Good for you here's the amount of xp you literally gain for killing a mob, but you wasted 10 minutes for it. Come again please.' Yeah no.
And don't get me wrong. I am all for grouping up. Played my fair share of organized wbs and everything in between. But like I said, sometimes your friends are offline, or you just have a bit of time to play so you can't waste it on making a group. Why should you be punished then? Because it is punishing to get such rewards after losing. Also I'm pretty sure the other side didn't have any groups either. So why was their NOT grouping up rewarded so much?
I agree with op that some minimal reward should be set, both for winners and losers. I don't think this would promote pugging even more (how much worse can it get anyway?), because people will not stop qing after one sc. This could even have potential for people to actually group up, cuz you will be playing with the same people and see who is good, so maybe you want to play only with them and maximise your chances. I don't think that's too far fetched.