Well it's hard to say. In online game anything can happen, even 0.1 sec of delayed internet connection can cause a missed shot even though you didn't feel it and people will cry csgo'd.
All the clips from the video are years old. But the clip where karrigan shots ct from a site isn't a csgo'd clip, it was explain many, many, MANY times why he missed - when you jump and land it takes 1-2 sec for recoil to completely reset, especially with weapons like deagle. That's why take thescore videos about games with a grain of salt, these people don't know what they are talking about sometimes.