Whilst we're on the "underperforming" debate on a certain aircraft company in the North West that seems to excel in just that.
The Reaper's single Honeywell TPE331-10 turboprop engine is rated at 900shp and weighs 403lbs, whereas the Mantis' RR Model 250s are rated at 450shp each and weigh 205lbs each (410lbs total) - I cannot see how they can say "a production version of Mantis would be able to fly at altitudes up to 50,000ft and deliver an endurance of over 36h." This would be nearly twice that of Reaper.
Standby for senior officers to go all blurry eyed again at over inflated performance figures and be hoodwinked by t'Bungling Baron Waste o' Space, his pet whippet Boogeroff and the cheap car lot sales team...