Yeah Guyver you're right that's not tackle, i checked it up from my earlier topic:
Diging For More Of The Unknown
I took a screenshot as proof:
http://www.watch.impress.co.jp/game/...1111/web18.htm
As you can see the icon has ARMOR on it which means you tackle with body, the skill that was used in video is the one that is below the tackle skill with man running, i also thought that this can't be tackle cause it reminded me of the double strafe forward as you mentioned Guyver. So it probably is that.