For what its worth I soloed in about 12hours and PPL'd in about 49hours (I think)
But IMHO as many others have said, this really is completely irrelavant nonsense, and is not something I would recommend that current or prospective students worry about.
In my opinion what makes a good pilot as with many things, is mainly down to having the correct learning attitude and a risk profile that is suitable for your experience and aircraft, and not based on getthereitis.
Flying should be fun, but we should never stop learning. Obtaining a PPL should be seen as merely the starting point, therefore time to first solo bears into insignificance tbh.