Okay I have to throw in my $.02 worth.
First, since none of us was IN any of these airplanes, we don't KNOW what happened. And yes, twins do have a poor record in engine-failure scenarios. Airtac is right on -- you're gonna land the airplane, you'd just better be flying the pig on the way to the spot. Twins can give pilots a false sense of security, because, yes, when it quits in a single, there's no "milking it" or "wishing" it further along the face of planet earth.... which pilots will do in a twin. An engine failure in a single is a much, much easier situation for making the "decision".... not much grey area there. It gets real quiet, real fast.
But, in a multiengine, having that ONE still running makes it mighty hard to mentally shift gears, and set up a descent to a not-too-desirable landing spot. So pilots have often tried to STRETCH their glide, often with the fatal results (mentioned already) that come from the decaying airspeed and the resultant stall and/or spin. It's not the airplane's fault -- it flew right up to when it DIDN'T.
So, as Airtac aptly explained, training training training is the only solution. You must know your airplane and what it can (and CAN'T) do!
Rough winds and bad air will make for a poor day of flying, but in terms of airspeed, will have no effect -- just the
groundspeed is affected in a high wind. Bad turbulence will warrant never approaching the minimum airspeed for any maneuver; however, this just goes back to knowing your airplane's limitations.
I don't have the manual anymore, but the twin I used to fly lead on fires in, at extremely low levels in rough terrain, had a single-engine service ceiling of something PATHETIC like 6700' MSL. (Or, even worse.. just can't remember.) Pretty nice, when you figure a normal density altitude during fire season is probably pushing 10,000' MSL, and the terrain itself is HIGHER than the S.E. ceiling.....
Translation: When the engine quits, the pig ain't gonna fly, no matter if you are current as hell, and sharp as a tack, and think you're Chuck Yeager.
If you're lucky, you may have a spot of uniform timber to head for, or.. maybe not. Either way, you're going down. Many of the pilots argued against wearing Nomex for burn protection, because an impact at minimum flying speed probably wasn't going to be that survivable anyway! So.. why sweat to death in the meantime?? So the argument went.
You never, never go down in the bottoms of those canyons without thinking about an engine quitting....
I've had two singles quit, one landing was in a horse pasture in 14" of dry snow, and the second one was on a road, right behind a loaded logging truck, who fortunately just HAPPENED to be going a hair faster.... so tucking in behind him worked out JU-U-U-UU-U-UST right. If that had been in a multiengine, no doubt we would have tried to make it to the airport -- just one mountain ridge away -- but we still would have had to judge the situation by the performance (or LACK thereof) we were getting.
They will fly right up to where you've put them in a situation where they can't anymore.

P.S. There's nothing that makes sailplane pilots giggle more, than listening to powered pilots go ON AND ON about engine failures....