New changes in Monk need some explaining

[Luphey]

The monk relies heavily on abilities that can only be used so many times per day where as the fighter does not.

Even with weapon focus (which is needed for weapon spec) you are still short 1 feat on both builds.

Using your build this is what i got:
Hit: +23/+18/+13 (BAB +12, Str +5, Chosen Weapon +3, Enhancement +2, +1 Weapon Focus)

Damage: 2d8+27 (+2 Enhancement, +7 Str, +9 Power Attack, +4 Greater/Weapon Spec, +3 Chosen Weapon, +2 Melee Power)

So Full Atk with power attack: +21/+18/+13/+8 (Not 100% on whether rain of blows penalty is only on the additional attack, assuming it is on all the attacks)
Damage: 2d8+27 / 2d8+30/ 2d8+30 /2d8+30 = 181 Possible Damage
(+3 Damage on all attacks after first during full atk from backswing)

I would think that if you were wielding a buster sword you would take vital strike over greater weapon spec, especially with overhand chop, but that's just me.

Now on the monk with what you have:
Assuming Flurry of Blows with Ki Point

Hit: +19/+19/+19/+19/+14/+9 (BAB +12, Str +4, Amulet +2, Weapon Focus +1)
Damage: 3d4+14 (on first attack) 3d4+12 On every attack after first (+8/+6 Str, +2 Enhancement, +4 Greater/Weapon Spec)
Possible Damage: (3d4+14)+5(3d4+12) = 146 Possible Damage (171 With Boost)

And if you have power attack on the monk then:

Hit: +16/+16/+16/+16/+11/+6
Possible Damage with Boost = 207 if all attacks hit.

Monks are less likely to hit but if they manage to get all the hits in they do exceptional damage. Fighters are more of a sustained damage bruiser type class, but i would not say that they cannot keep up with monks. It really depends on how optimized each character is.

As for the martial arts styles the first time you take one you get the novice version, take it again and you get the next version. Essentially you can take the novice version of most of the styles if you wanted rather than focusing on one or 2 styles.