The sun reflection is not always wider, i think it tends to be narrower because of perspective.. Even real life photography makes things almost the same depending what camera lens is in use.. The same FSX, so everything you see is a virtually camera lens, zoom, wide angle etc..
1. And will it bee good to change reflection method on entire sim and what about other object reflection after modification ?
2. FSX is just a little worse than the real life - it is a game. Sorry, simulator..
3. Try X-Plane you will love that environment render..