I see. I think.
I've always used 12 inches as a cut-off point between "normal"-sized dicks and dicks that require over-sized scenes. Unfortunately, whoever wrote Condensol was reading from a different song sheet (and tbh that item gives me a headache on a number of levels, but that's a story for another day). I'm loath to change it because I feel there's a slippery slope in that direction. If 14 inches, why not 16 inches? If 16 inches, why bother with a limit at all? Realistically, fitting a 12 inch penis into a fairly normal 5'8" female isn't possible, and I don't want to push things even further simply because someone has a sports car that's slightly bigger.
Tl;dr grow one small dick and one massive dick, like everyone does.