| Nipenthis |
Well what I meant was that the Weapon Training gained at 10th level is really a class feature that not only is it useless (since the Kensai has already got another version of it), but it also goes against the idea of the Kensai (who focuses on a single weapon and shouldn't need to gain fighter only feats that he can use with weapons other than his chosen). For this reason it's a class feature that should be removed from the Kensai's abilities the way I see it. And although spells and arcane points are ok, it's not like the Magus needs to get the Critical Focus feat as soon as possible. Besides, Critical Perfection also gives him another bonus so it's an ok ability even if the character can't gain Critical Focus at the same time. So if you get Critical Perfection at level 10 you can keep the Magus Arcana from level 9 and also replace Weapon Training at level 10, which shouldn't be there for the Kensai.
If it's a matter of power I get it, but personally I don't think that one more Magus Arcana can make a character overpowered, and maybe the fact that he needs to wait for two more levels to get Critical Focus balances that out.