[Electriclight]

NO NO NO

There's enough stuff here to blow out your pipes. What does the meter on the output look like? What does the wave form look like? If your waveform shows alot of empty space you haven't compressed enough. If your waveform looks like a solid smashed up bar with flat tops and bottoms you have done all that you can do.

There are many tricks to making a mix sound loud, most of them do make a mix sound crummy as well. . But don't blame Cubase LE4... You are way off base there.