Strikers is no comparison to Sentry in my opinion. Nearly a guaranteed 45% dmg increase from Sentry in less than 1 second from a SMG or other high crit weapon is huge in PvE and PvP. And the bonus stays until the target dies. In PvP, Strikers is very difficult to proc even close to max because people are moving around like crazy, hiding, doubling back, and roll dodging. If you have some insane stability and accuracy and you are able to hit the target near 100% with your l337 FPS skills, you're on a loop that has tons of mobs in quick succession, then I can see Strikers being the leader. However it's not realistic as mobs and players simply move around too much. Lastly, when running with a crew of good people, elite mobs die so ridiculously fast, that immediate 45% punch from Sentry makes mobs drop like flies. In Strikers, I'm running 20-60s to the next target while my set dies back down to 0% bonus. If you're a teleport hacker dumping full clipped headshots in to people with little down time, Strikers is a mans best friend. If you're the normal human who actually plays legit, then I believe Sentry is the hands down winner.