NAS products are equal parts hardware performance and software features. One compliments the other in a balanced product. You need more hardware performance to run more software features at the same time.
Just because a NAS has the ability to run SQL doesn't mean the hardware will let you run SQL at a high rate of speed while a user downloads Bit Torrent, watches YouTube and decompress an NZB file.
It's really difficult to find words after a feature list like that. Extensive, to the point of being flamboyant, maybe? Those are just the official features. More software packages are available from the QPKG Center.