According to Valve:
7.1GB = 3.3GB
Oh and you may think? WTF why 7GB? Well Steam cannot use diffs. All patches for Company of Heroes (and a bunch of other games) use diffs, diffs (I guess it’s from the word: difference) are files that look for original files and add new content to them.
But Steam needs all files redownloaded all over again after every patch, it cannot add those new file “contents” it needs to override them.
Another reason not to use Steam. And I know I sound like a hypocrite but I have around 80 games on Steam and I’ve invested at least $600 into my account, so no I’m not going to quit it just yet.