Twas merely a random observation. I actually learned quite a bit from the video. Was totally unaware that Zamus had a legitimate zoning game. Most Zamus I meet play super rushdown.
In terms of character strengths -
ZSS tends to do a very solid job converting slight adv positions into heavy advantages / punishes because of her combo game.
She tends to do a very solid job of converting slight disadv positions into neutral because of mobility and flip jump.
She tends to do a pretty poor job of opening up a character that is determined to stay ground and play out of shield from the neutral position.
Generally because of this, unless you're a significantly stronger player than your opponent, I feel it's best to play the zoning game in order to use sequencing and pro-active yomi loop manipulation (as shown in the video) towards reconciling the short comings at neutral.