So, in your opinion a 3 year sample is adequate? On what ground may I ask. That is the one that fits Alonso? At least the one year interval keeps with the official season and is imune to outside manipulation. It is what we have seen through an entire season. Next season, next count. There are not "enough" races? what does that mean? It is not like we are going to definitelly prove anything here. But if you want to stick to that argument then a full championship has 20 races, so track back 20 races. Why stop at 9? Maybe Alonso still comes out as "rain champion". I don't know and don't care.
I would not be calling rain champion to a guy that prayed for rain in Brazil and could not keep his car in front Hulkenberg in a Force India when the title depended on it. He could not even keep Massa behind in a similar car. Further back a young German came fast with a fury in a underpowered, unbalanced car lapping ever faster, that is, trying to be world champion, not seeing if it happened. At a given point all the "rain master" did was beg for a safety car to narrow his gap to the lead. Which he promply got.
Miths are hard do bring down because people who believe in them grab every shread of information to build a consistent story that demonstrates the mith's alleged power. When it comes to Alonso I've heard it all. He was the ultimate developer of cars until he came back to Renault, he never faltered under pressure until he was stuck behind Petrov, he was the rain master until he crashed in Japan. He is the driver of the age, but it has been 6 years now...and counting.