Yeah the shape control in ANA 2 changes the tuning spread between each voice of the unison. I think the virus is just linear spread... Roland has some logarithmic nature to the tuning spread.
If you are trying to replicate the Virus hypersaw the important thing to match is that the virus OScs are mono. So you should set width to 0
This will instantly give you more density.
To replicate the stereo mode from Virus you need to use 2 OSCs set to width zero tuned slightly +- 5-10 cents from Each other. Then pan each pack hard left / right
There is a virus template I’m the factory folder that replicates the virus set up pretty well.