May I ask why you posted this in both "Releases" and "WIPs/Tests"?
This thread gets it right, and it does belong here, but why post it twice?

1st and 2nd Walk tests, they're pretty good for missing any "between the studs" frame. The arm swinging is pretty smooth, and once you add the extra frame, you'll have a nice walk cycle.

Run Test, it went by fairly quickly, but I did notice that the guys arms didn't swing that much. Running cycles need more, not less, arm movement.

2nd Run, looked more like a walk, and again, there wasn't much arm movement.

3rd Walk, didn't look quite as good as the others, so whatever you did differently, don't do it.

Other than missing the "In between studs" frame, they're fairly good. There are a bazillion and a half walk cycle tutorials both here, and on Youtube, so I suggest that you go watch a few and use that knowledge to polish yours up that last little bit.