Both are backlocks, but Spyderco really does do the backlock right. Solid lockup, easy to operate one handed.
How do you operate the lock one-handed? Well I've operated them almost one-handed in the past by putting my index finger on the top of the handle and pushing the lockback lever with my thumb, but then I have to use my other hand or some other object to start the blade closed. I find a linerlock or similar much easier to operate truly one-handed. I did have a small lockback with a loose enough pivot that I could push the lock lever and the blade would start to swing closed, but hold it wrong and the blade would build up enough momentum to slice into your index finger. This is the reason I completely abandoned carrying lockback knives.