Show health numbers of allies and enemies

I just added -perfs to the shortcut and it displays a ton of what looks like graphics related data, including FPS. I didn't see ping though.

I'm not sure what it looked like in Guild Wars, as I never played it.

Revival and it's speed is based on several factors:

1. Your health when you are reviving someone (Faster when you have more health to give)
2. Your experience level (More Experience = More Health to start with)
3. The number of people helping to revive the downed player (Revival is the sum of all people working to bring you back)
4. If the player you are reviving has a "downed penalty" (Slower recovery time and reduced per person revival

A player will "Rally" when 25% of their overall heath has been returned to them either through player revival or other skills. You also gain a little experience for reviving someone.

The easiest way to see the difference starting with more health makes is to head to PvP and do the Revive a Player Heart Task. Since you are automatically set to level 80 when you enter you can see the per second revival stat at it's maximum vs when you go back to PvE and it adjusts to your Health/Experience combo.

The Revival page on the wiki talks to the process but not so much the exact per second calculation.