Having seen TTT, there is no way that Aragorn, Legolas, or Gimli are in any way close to Epic Level. Notice the fall that Aragorn took, one that dazed him and left him unconscious. Also, Gimli and Aragorn were forced to run from orcs on a small bridge, where they could only come a few at a time. Further, orcs were dropped with one hit from the bows of defenders, something unaccomplishable unless all the orcs were relatively low level, or that all of the defenders are high level.
Even if Legolas killed Vek, he would come back, Harm Legolas, and kill him.