He [Alonso] won fair and square in a decent (not brilliant) car, but one race win doesnt make a season - let alone make him the "daddy"
1 race win certainly doesnt make him the daddy.
But the 2 World Championships, both of which he beat MS (no one in the current field can boast this), the highest race wins and the highest points total, does.
Add the fact that last year, without Alonso, Renault were useless. He comes back and surprise surprise, they got a race win.
Add to the fact that in a McLaren, at least, for a variety of reasons, Hamilton is untouchable - just look how Heikki is being blown away (and please dont say that Heikki is crap, because before he joined Hamilton this year, he was touted at as a potential championship contender). Yet, when Alonso raced him last year, he matched him on points total. Had the FIA not demoted Alonso, on the grid, at Hungary, he probably would've won the world championship in 2007.
All these things combined make Alonso, F1's current all-round, best driver. Yesterday's race win is merely the tip of the iceberg.