Here's another way of looking at it ...
Older isn't always better.
And that from someone just went with the "older" replacement. In my case, it boils down to "teaching an old dog" ...<G>
Both tips have the same basic profile, but seems to me the New! Improved? JICO may be just that in the way it attacks the groove. Granted, the important profile is on the sides (and those do seem to be a good match), but the JICO presents a much smoother leading edge - arguably easier on the vinyl.
All that assumes similar construction and materials. I'm sure there's more than meets the eye when it comes to detail and warmth, both of which the D625 had (and hopefully will still have) in spades.
I was gonna try to do an overlay of the two pics, but there's too much parallax distortion to get any decent results.