They are powerful but are they powerful enough to run LR4, CS6 and Adobe Premiere or is that better left for heavier lifting systems?
For some still shots in Lightroom, any current computer system is adequate. The problems show when having larger series of burst shots, and having to render/compare them - rendering times add up and slow your workflow to a crawl.
For Photoshop, it depends if you are working with lots of layers which eat up memory, but for simple retouching it's not that much different from Lightroom. On the other hand, if anyone buys PS, he/she should have money for a fast box, too.
For video, you want the latest and greatest desktop with fast raid0 disc drives and 4/8 multi-core cpus, don't bother with any laptop system that would just burn through your desk when running at 100% for an extended time.