It certainly is confusing. My interpretation:
Project Gunrunner - Started in GWB administration, had some success
Operation Fast and Furious - Offshoot/part of Project Gunrunner, re-purposed to support Obama's lie that 90% of the cartels' guns were coming from US
Project Gunwalker - a blogger's nickname for Operation Fast and Furious which plays on the original project's Gunrunner name and the fact that US agents allowed/facilitated the guns walking across the border
That makes sense.
Thank you, Bob!