I wasn't exactly an awesomewm power user, so I'm sure there's awesomewm functionality you couldn't mimic in kde, but my most used keyboard shortcuts I was able to import in to kde.
I haven't tried KDE tiling out yet but tiling is not just about shortcuts, it's also about tile creation patterns, tags/virtual screens (dynamic or not) and of course default settings. I am not an awesome power user either, mostly basic settings plus dynamic tag management (empty tag are deleted automatically, new tag is created when switching to next tag, number of tag start at 1). The rest is just shortcut remapping and getting a systray with audio and network applets. No application based tag, no custom script to display bitcoin trading or media player widgets.
My only problem with KDE is the lack of a feature that Awesome has: I use 2 monitors and in KDE when I switch to another workspace the workspace switches on both monitors, while in Awesome when I switch to another tag only the tag on the active monitor changes.