I can make no assumptions about higher tech equipment until I try them for myself. The visuals of the pour have always an important indicator for me but not a hard and fast indicator. I can't remember the last sink shot I poured, not because my technique is so good but I tend to try everything.
I think pressure profiling may be a significant enhancement and my own experiments on pre-infusion seem to bear that out. Lately, I have been combining a finer grind with a longer pre-infusion with promising results.
As you know, in the end, it's what is in the cup that counts.