A million and one what? Points that don't pertain to the discussion? It is an indisputable fact the AL is better than the NL.
Your point relates to the number of inter-league games, which isn't even a counter-point to me saying "the AL accumulates better talent over time". It would be like me saying, "It's warmer in Hawaii than in Alaska", and you saying, "I disagree because I rarely go to Hawaii".
The only part open for debate is "why is the AL better than the NL?". The obvious answer is the only real difference between the leagues, the DH. The most obvious reason that is the case is because the AL teams have 1 more MLB caliber hitter on their roster than NL teams that they can use as a DH or as a PHer in a high leverage situation. The less obvious reason is that the DH position allows teams to sign guys like Pujols, JUpton, Mac, Miggy, Oriz, Bautista, and many other older sluggers without fear of them having no place to play when they get too old to play the field.
How many times have you seen it written that so-and-so veteran slugger will likely sign with an AL team so he can DH? The NL simply doesn't have that option. Over time, the AL accumulates better hitters and can deploy them as DHes.