@Farming will take that to mean you played a little but never got big into the pvp if you never saw people getting attacked with range as well. Regardless Runescape numbers are similar to Eve Online numbers. Many people run multiple accounts at once.
That being said AO at its best time has numbers close to rune at its worst time. Many of the players that played AO in the past came from Rune just to leave never to return again because of failed ideas that are pushing the population away.
Regardless point still stands Runescapes map is designed well enough to bottle neck the population into extremely small choke points that make it seem like the game is alive at all times.
The only thing that I would say you can't compare AO to runescape on is depth. Back in the original days of Runescape when it was first launched it had more depth and things to do and quality of game than AO has ever had.
video was just for you to see, bit after my time in runescape I recall all the crossbow spammers before it ever made a 3d version of the game.
Your video is an an example of rs3 in a multi zone (that is designed for groups / clan fights). Its not a solo area. You can tell multi zones by the 2 crossed swords in the upper right, just left of the mini-map for this version.
Saying eve is similar to rs again is a joke.
Evev currently has
<Source : community.eveonline.com/>
and roughly 1k viewing via livestreams
As for the map it differs between the 2 versions:
<this maps is too large to post so here is a link to the interactive version>
All pvp is done in the section called the wilderness or in mini games on both versions.