Highbies may be in the middle of something and thus not able to help even though they are newbie helpers.
2001 May 1, Richard Burge, “Re: Money making with tailoring”, in alt.games.everquest, Usenet:
Backpacks go to high levels who want to replace their crappy 6 and 8 slot containers - if you are too low level to auction where they hunt, try somewhere like EC tunnel where many highbies stop by to off load their wares.
2001 September 5, Silverlock [username], “Re: Why trivial loot code sucks mister Harmon.”, in alt.games.everquest, Usenet:
A lowbie always has access to highbie stuff simply by leveling up, but highbies are purposely restricted from this content.
2004 November 3, Marcel Beaudoin, “Re: For me, City of Heroes is more fun.”, in alt.games.everquest, Usenet:
I can't count the number of times that I have been in a fight, and some anonymous highbie runs by, throws a bubble/heal/buff on the group and keeps on going.
2006 January 24, Lehl [username], “Re: Have your guilds 'branched out'?”, in alt.games.warcraft, Usenet:
Apparently, their lowbies are now in one of the guilds, and the highbies all migrated to the other guild.
2011 — Lauren McLaughlin, Scored, Random House Children's Books (2011), →ISBN, page 3:
The score was "the great equalizer," and Imani knew that as a "highbie" she was poised to benefit at the highest level.