Setting Aspect Ratio Manually in game will return:
false - for Narrow format Aspect Ratios (3:2, 4:3, 5:4, etc. )
true - for Wide format Aspect Ratios (5:3, 16:9, 16:10, etc. )
Setting Aspect Ratio to "Auto" in game will return "false" or "true" based on the actual set Resolution Ratio.