Is everything OK with engine placement depicted in Flight Simulator poster?
No, Microsoft's image is not doctored.  It looks very much like the image from a 2010 press release for the A320 NEO.
(Dictionaries say that doctored means deliberately altered or manipulated, in the same sense as the original question's &quot;artificially modified&quot;.  That would apply equally well to developed photographic film, a software rendering, or even a cocktail napkin sketch.)