BTW, sust is actually
propionate 30mg (2 days) - 24mg actual test
phenylpropionate 60mg (4 days) - 40mg actual test
isocaproate 60mg (9 days) - 43mg actual test
decanoate 100mg (15 days) - 63mg actual test
Also, the flaw in this article is that a 1/2-life doesn't mean you don't get the test until a certain time, it just means that it takes that long for the ester to be broken down. The breakdown is also not linear. So by using 1000mg of sust all at once in the first week, you'll get roughly 400mg of actual test total in the first 8 days.
By comparison, Test-E, 500mg contains 350mg of actual test, with a 1/2 life of 14 days, giving you about 200mg test total in one week (ester breakdown is not linear).
In sort, without going into all the details and theories, all long esters take time to kick in. That's why people need a kicker before test serum levels become elevated from the buildup of the esters in your system. An alternative is to front-load, but that's not as stable due to too many variables. The author is comparing what is essentially a long ester compound (Sust), with test-prop.
Also, everyone's system breaks down each ester slightly differently, so maybe one will work better for you than others.