You are missing some entries in "Characters" and the "Battle System" looks like it could use a bit more work but you probably already know that.
I do have a question. Do you have tiers in your "Overall FF Ranking" list? Like: FFVII, FFVIII, & FFVI are in your top tier; FFX, FFIV, & FFXII are in your mid-tier, etc. etc.
I would say how the characters progress in power and the battle system should be seperated though when grading the battle system I would include character progression. For example: the Sphere Grid may be awesome but the person doesn't like traditional turn-based.
As for what I think I won't get into it too much but my Overall FF Ranking list would be:
1. Final Fantasy XII
2. Final Fantasy X
3. Final Fantasy VIII
4. Final Fantasy IX
5. Final Fantasy VII
6. Final Fantasy V
Final Fantasy IX & Final Fantasy VII are pretty close to each other and may switch spots depending on how I feel. If I were to place Final Fantasy Tactics somewhere it would be in this tier probably between Final Fantasy VII & Final Fantasy V.
7. Final Fantasy VI
8. Final Fantasy IV
Final Fantasy VI & Final Fantasy IV are even more close than FFIX & FFVII are. I like FF IV's story a bit more because the World of Ruin has gotten in my way of fully enjoying Final Fantasy VI three times - specifically the second half, no problems with the World of Balance. But Final Fantasy VI has way better customization & music though FF IV's music was good as well. I will always give credit to Final Fantasy VI's music.
9. Final Fantasy III
10. Final Fantasy II
11. Final Fantasy
I don't consider these bad games at all as I like them very much. With them they are very solid games they just lack in story & characters in various degrees to the games above. For example I have some negative feelings toward Final Fantasy IV & Final Fantasy VI but what they do good out-does these games.
12. Final Fantasy X-2
This game is pretty solid but the story had some good premise and good new characters but poor execution. The battle system is really good and there is a lot to do in the game.
13. Final Fantasy XIII
I've mentioned my faults with this game a few times. You could check them out if you want a reasoning for why it gets this spot and tier.