You know, I was thinking about 1h/2h, so I came up with the following. This is from a 99/70, no MVP cards, player's perspective.
1h>2h. Sweet and simple. Because you can switch to a 2h, activate Parry, and then switch back to your 1h + Shield. At least, this works the last time I tried.
And because weapons worth using for BB (that should be the most used offensive skill for sword LKs, no?), are HA, CK, and Exec. Take note only Exec is 2h. I'm not taking into account all the new and largely unreleased Lv4 2h swords, btw.
Anyway, Frenzy is useless. Really (overrated). Unless you're up against some noobs who don't even have a proper Job composition in their party. Or if you have GTB. Well...duh.