I'll try to put here graphs and calculations about the "title race".
Firstly a strange graph. Score positions of the current six first drivers (VET, RAI, HAM, ALO, WEB, MAS) using different score systems. I have used 5 systems that resemble some usual (or theoretical) systems. Each one is represented by a gray vertical line. In that vertical line appears the ordering with that system.
Climbing lines represent the drivers, with colors according to their teams.
Num. Wins: Number of wins and fall back to num of seconds and so on.
Aggressive: A system rewarding half points for one worse position.
Classic(al): F1 classic score system 9-6-4-3-2-1.
Conservative: System rewarding wins more than current F1 but less than the classical one.
Very conservative: Similar to current F1 system or MotoGP system. Rewards consistency over wins.
Not great changes across different score systems. The only detail is Alonso would be above Hamilton in any system less conservative (consistency oriented) than current system.