ok, for as a poster, it would look bad to have one main event occupying more space in the banner than the other main event.
Both should occupy almost the same space of the banner imo.
The background of the main banner does not suit the bkg of the images, it just looks unsymmetrical combination of the two.
Try change the font of the events and make them alittle more similar to Backlash font. (But not exactly the same) just more similar design.
One thing i also noticed that HBK image (he looks too young in that image, try have a more recent image of him).
Add a border to the poster, make the border very thin (1px black).
One last thing, add Raw, SD and ECW logos in the poster.
Sorry for the long feedback though.