Consider the chances either paladin had of killing the bard, at the palace, solo. Pretty much zilch. Even with two of them, the only reason they even had a *small* chance was because the bard was aggressive and decided to stick around to kill *them* instead. (Or else, he just didn't have a potion on hand.)

I tend to define gankiness based on the following rules:

1. If you attack someone solo then it is almost certainly not a gank.
2. An exception to (1) are characters like Ravon, Cabdru, Hunsobo, etc., who can, against certain foes, be considered a one-man gank squad. For them, consider:
a. Was the opponent killed after he (the opponent) initiated the attack? If so, not a gank.
b. Was the character acting in a role-mandated capacity, i.e. defending cabal or retrieving item? If so, not a gank.
c. Did the character intentionally (and repeatedly) seek out an opponent against whom he has a near 100% chance of success? If so, then possibly a gank.
3. For groups:
a. If the odds of killing the target with a group 1 smaller than your current group are near-zero, then it is most likely not a gank.
b. If the odds of killing the target with the current group are near to 100%, then it is probably a gank.
c. If both (a) and (b) are true then it's a judgment call.

For instance, if the group here was Inglor plus a transmuter, or Inglor plus a storm axe warrior, then I might be more inclined to say "gank".