UA Rogue vs UA Fighter - Who can pick Weapon Specialization?

[LentilNinja]

So I'm looking to build a character that multiclasses with Swashbuckler. I looked at Daring Warrior, and wondered if the UA Rogue would be able to pick Weapon Spec. I figured that if it could, is it fair the UA Fighter could still get it? It asks for "Fighter 4th" so I think that it should be ruled any Fighter variant can get it, but what do you guys think?

The rogue who favors martial training over stealth and cunning can profit if she chooses her fights carefully.

Gain: Bonus feats (as fighter).

Lose: Sneak attack.
Some fighters prefer stealth and cunning over martial skill. This variant can also be combined with the thug variant.

Gain: Sneak attack (as rogue).

Lose: Bonus feats.

[shadisky]

What matters in this case is the levels of a given class, so the UA Fighter will be able to take weapon specialization, and the Rogue won't. That's also by RAW, and not by any form of sensibility.

[Taelas]

The Rogue can't take Weapon Specialization and the Fighter can. The variants do not affect that.