the usage of AS WITH! NN and 版主 please help!

DesmondWang

I am confused with the usage of "AS WITH". is this usage permitted by GMAC? for example:
"As with any well-executed marketing plan, sales jumped whenever fans were goosed with new media."——this sentence is from nytimes
I saw a instructor once said on another forum that
[The usage of "as with" is absolutely correct. Because ellipsis is at play. the words "is the case" have been omitted to create a much more concise sentence."as with"="as is the case with"]

but I also saw one prep sentence:
"As withthose of humans, the DNA of grape plants contains sites where unique sequences of nucleotides are repeated over and over."(the incorrect use of those is not my concern)
here a instructor commented:[We don't know what the function of "with" is']
I am confused that can't this prep sentence be written to "as is the case with those of humans, the DNA of grape plants....".
if so, then the 'with' is not wrong here

which one is correct?
NN，please help！

DesmondWang

木有人睬吗，顶下先~

DesmondWang

还是没有人理啊，麻烦回答一下吧

DesmondWang

两天了没人回。。。哎。。。放弃~