You can probably edit any format on any drive in reality, but it may not be a very good experience in many cases. The Speed Test is really telling you what formats you can expect to be able to reliably capture/playback without dropping frames.
Your numbers are very poor. A single 7200rpm SATA drive will usually push about 100, two such drives in a simple RAID 0 will hit 200. I just tested a 3-drive RAID via Thunderbolt and it offered throughput of well over 400!
At a minimum, ALWAYS use a dedicated hard drive for any video editing, with any NLE. That means never use the System drive, or the video will be competing with the OS and Apps for drive access constantly, killing performance.
Thanks
Jeff Pulera
Safe Harbor Computers