The guns are actually even larger than that Titan's, but don't show up well in an overhead view. It's a shame I can't find a non-damaged version of the hero version of the Aggressor in Empire at War's files to make a sprite from, because it looks badass:
In EaW, the Aggressor was the only non-hero unit capable of one-shotting hardpoints and it outranged most ships. I have fond memories of setting an Aggressor just out of range of a tier 5 space station (the tier that makes Super Star Destroyers and is
bristling with heavy weapons) and destroying its hardpoints one by one. Good times, good times...
Edit: I went through the files and manually pieced together the different parts of the hero version since it looks so much better. Hopefully a talented spriter could clean it up to the point it's usable (if you notice some green pixels remaining, it's because that's the background color I used in the model viewer to make magic wand selection easier):
If there are any
EaW units you want me to try to find, Nexus, let me know.