That's a pretty hard knock on Swarovski. I haven't heard that before, so I have to call you out and request you back up that statement. I don't have a pony in the race here - just very interested to know why you reached that conclusion (c'mon, you knew it was coming).
Regarding mechanical over optical quality, I agree for PDs and coyotes. Atmospheric turbulence usually limits resolution for PDs. Coyotes are usually called in close and sighted with the naked eye, so not much scope is needed.
For big game and especially deer, however, I would say optical performance should be at least as high a priority as mechanical performance. Targets are difficult to spot, illumination is often marginal, and turbulence is usually low. Good glass can make a difference, especially in the area of glare. Veiling glare reduces image contrast and that means reduced resolution. I'm seeing a wide spread in glare performance among scopes in the $400-1,000 MAP price range. Resolution over the field of view also varies quite a bit.
For a multi-use rifle like this one, I would let the most demanding scenario (in this case deer hunting) drive the scope selection process.