Telling the difference Cup/Std Spoiler

[Oggy997]

How can you tell the difference from a picture alone?

Any tell tale signs?

 

[FiDoDiDo]

Cup Spoiler:

Non-Cup Spoiler:

 

[Oggy997]

So the brake light is a give away

 

[FiDoDiDo]

Main difference really, cup looks much better IMO.