Tested it in game, before, APDS with the penetration could go through areas like this.
Gaijin had been progressively dismantling any advantage that APDS might have. It cant penetrate flat armor because of a 1mm gap between two plates. And it cant make use of any sloped buff it may have received because now things like tracks (which are supposed to provide superficial protection) are able to shatter it.
Its not a coincidence that the half-assed shattering mechanic was put into full motion the moment that L28 APDS got a pretty substantial buff after it had been knowingly underpowered for many years.