i guess that's possible, there just aren't that many ops on my server, the ones that do fight me usually go like this:
they pop out of stealth hit me with a big attack for about 20% of my hp and stun me, i pop my de-stun and damage immunity immediately, i knock them down, i then heal the ~25% or so damage they just did with the pvp med pac, pop all my damage resistance cd's (they last about 20 seconds) then we beat on each other for a bit until they get down to 20% hp remaining and i still have 80%, they vanish, i aoe and pop them out of stealth and kill them.
they seem to have very little left once you survive their initial burst attack