Okay, so I've used the stealth exclusively for quite a while, and it's a mixed bag in terms of performance... Sometimes it'll go on a run and get 5-6 kills, sometimes 1 or even zero. Haven't tried the escort at all, but is it worth the extra score? Or is the performance essentially the same?
I don't think it's worth the higher score. Stealth sort of does it's own thing while escort will follow you. I feel like since the stealth doesn't show up on the map people have a harder time shooting it down then the escort even though the escort flies lower. The escort will prob get you more kills but it's also more map dependent.
I find the stealth chopper to be a lot more reliable. Escort Drone can give away your general position and because they can see it on the radar they are more likely to hide indoors from it. With the stealth people barely notice or think they are ok to move about and end up dead.
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