jonty
Yes agreed the failure would contribute to the reasons why the pilot lost control but its the pilot who looses control unless of course the failure makes the aircraft unflyable.
An engine failure over extensive dense forestation would inevitably lead to a crash in trees a good pilot would maintain minimum flying speed into the trees and turn into wind another pilot may stall /spin into the trees.
Both could be killed but the good pilot would have a better chance of survival.
An even better pilot would not fly over dense extensive forestation in a single piston at an altitude where he could not glide clear into open ground
Pace