Ok let me see if I get this right, other rules might have changed during the time I wasn't able to play, but roughly I believe EXP is divided by player.
This is only partially true. Instead, a number of things come into play (reference: wiki's xp page
). First, a mob has a base level of XP to give based on the highest level person in the alliance/party. In the case of an alliance, each person receives (1.8/# of people in alliance) of a share of that base. So, for 8 people, each person would receive .225 of a share.
A skeleton warrior is level 15-17, which at level 22 is 7 to 5 levels below. The mob 5 levels lower would give 130 xp to you. The one 7 levels lower should give ~110 (haven't tested myself and wiki not updated for that particular level). So, solo, you get ~110 to ~130. Assuming you were capped level, a party of six would receive ~38.5 to 45.5 per kill. In addition, they'd kill much faster than you solo. Since this value is well below the cap value for the mob, we don't need to worry about cap. An alliance of 8 would receive 24.75 to 29.25 per kill, as the alliance share greatly affects the outputs. Finally, the page bonus is given in full to anyone who completes the page every time they complete the page.
Sure, each individual is receiving only 22.5% of the original amount they'd have gotten solo, but if they kill at least four times faster then the soloer, then the xp will come in even faster than the soloer.
More ideal situation: 3-4 level (synced or otherwise) BLUs using the Refresh boost at level 18 + random assortment of healing/DD. Each BLU solos a warrior, killing it quickly, while everyone else targets another and goes for it. Level 18 would yield 150 to 180 xp per kill. Alliance of 8 would give 33 to 40 xp per kill per person (same share as above) for six skeletons + 660 per page (which will grow until it caps at 1320 per page), so you're getting 858 to 900 xp per page to a max of 1518 to 1584 xp per page. This can lead to a lot of potential xp, especially if everyone teams up and shares those 8 skeletons. What would be lacking? Skill ups for anyone but those BLUs in Blue Magic Skill, assuming they were the Syncee. A non-BLU soloer will make far less than this in the same amount of time (hint: Bludgeon is THAT good at level 18, especially on DC mobs).
Again, due to the way SE has defined the claiming system, regardless of how many people were there when the alliance/party moved in, you've got the choices that have been outlined above. You can join with them (getting less skill ups but more xp), compete with them (getting skill ups but much slower xp from when you do get a claim), or move on to a different spot that may have less competition (losing the time you've put in and possibly a page if you decide not to finish it before leaving).
Frankly, the "many" having more issues than the "few" is grossly exaggerated in these cases. Utility is much harder to measure than this. In order to truly measure utility, you'd have to give numerical values to more than kill speed and xp payout. You'd also have to consider travel time and alternatives. As such, I really hate that argument (and always have). Something like Gusgen isn't horrible (one tele, and you're a stone's throw away), but it still has to be considered. Were they jerks? Very possibly. Were they trying to maximize their time/xp? Definitely. Did they try to communicate with you? Yes, making it less of a jerky move. Did they do so efficiently? No, which removes the ability for them to claim any moral high ground (if they had any to begin with). Do you have a right to be upset they horned in on your territory? Absolutely. But, since you can't stop them from doing so, either grow thicker skin, find other areas to do your soloing (less high traffic areas), "suck it up" and team up with them, or continue to feel justified in your position that they're jerks. Heck, you definitely can continue to get away with that last one regardless of which of the other three you choose.