Wow, a Russian troll (who’s post was removed today) tried to comment in my first thread on audiogon from 2012. So this zombie thread is up again, sorry.
So I will answer myself 11 years later:
Technics EPC-102SP was designed for use on tonearms made for popular in Japan SPU "A" (and related) as an alternative, so the overhang is much shorter (on conventional tonearms it must be used only with adapter). Never tried this 102SP, but at the moment I have 205-P mk4 NOS (all other Technics from my collection are all gone). System also dramatically changed, this is my system in 2021.
So I will answer myself 11 years later:
Technics EPC-102SP was designed for use on tonearms made for popular in Japan SPU "A" (and related) as an alternative, so the overhang is much shorter (on conventional tonearms it must be used only with adapter). Never tried this 102SP, but at the moment I have 205-P mk4 NOS (all other Technics from my collection are all gone). System also dramatically changed, this is my system in 2021.