Bert,
Imagine yourself at 6000 feet msl, temp about 90F, at the end of a longline hovering OGE trying to dump water on a snag or someother point drop....and you have an engine failure or low side governor failure in your trusty 212...does it really matter the other engine is running? The cost of operation for a 212 exceeds that of a 205....but how many of the things got retired from Offshore Flying by competition from newer faster machines thus are now available for fires or other utility work.