All I'm saying is that I'm pretty sure that DA-62 has better engine out climb performance than my 182, or your guys' Cirrus's.....I could be wrong though, don't quote me on that...
Checked the books on that?
Some light twins with the gear down and one prop windmilling will underperform the glide ratio of a 182 with the prop stopped...
Especially at max gross.
The DA-62 falls into that size range where it's pretty likely a gliding 182 will beat it until the gear is up and the prop is feathered. And then it won't beat the 182 at some altitudes by much.
In most light twins losing an engine doesn't mean a 50% reduction in performance, it often means an 80% reduction when configured ideally and more in a non-optimal configuration.
At sea level, having that second engine can mean good things as long as you don't need to climb. At higher altitudes and DAs, the engine on the wing might convince a pilot to try to stretch the resulting downward glide to an airport that's just too far away, passing over a lot of good off-airport landing options.
Or the more common accident, setting up a standard low altitude approach many miles out from an airport and getting slow and not having the power to make it to the airport, so then adding too much power and slowing too much simultaneously and becoming a smoking Vmc hole in the ground.
That happens WAY too much in light twins. The total number isn't high because there's a lot less twins an twin pilots flying the stuff small enough not to hit the requirements to be able to climb out on a single engine, but in the light twin segment, it's unfortunately common.
In the case of the DA-62, just remember that 180 horsepower is a reasonably capable upgrade engine for a Skyhawk in the mountains around here, on a good weather day. And the Skyhawk weighs less and the thrust is centerline for that 180 HP. Not dragging a heavier airplane through the sky sideways.
Add weather, ice, winds, pilot inattentiveness or being lulled by the "safety" of that second engine, heavy loads, all the stuff people say they buy light twins for...
... they'll bite you square in the butt if you let them.