I just don't see where ANY 61 note keyboard can be called 'weighted'. It just dilutes the meaning of the word. Sure, it's got SOME mass (or it wouldn't exist!), but for it to have any meaning as a key-touch description, the common usage has been...
unweighted - PSR
semi-weighted - (from lightest to heaviest) T2, G70, K2500
weighted - RD700SX, P90, etc.

To use the word 'weighted' on a 61 organ keyboard is marketing gobbledygook.

Now, can anyone work out how much lighter your wallet will be after buying one of these...?

$8000 just for the RACK