Attributes B is 16 points, so 3 in each stat (obviously most builds would shuffle those around). Certainly playable, but there aren't many builds that wouldn't be more mechanically efficient with A stats. 8 Attribute points are huge. With an Augmented Max attribute, a single skill point and a specialization gets you 13 Dice. Another 10 Karma gets that to 14 dice, and your second Specialization.
Even with Skills and Attributes costing the same Karma to raise, it's still more efficient to have high Attributes and low skills because of the lower costs of the first Skill Rank, Specializations and Expertise.
Going from 3 to 4 in an Attribute costs 20 Karma, gets you one dice in a few skills. Same 20 Karma gets you a Skill, two Specializations, and an Expertise. 4 to 5 in an Attribute is 25 Karma and that gets you the same Skill plus two Specializations and an Expertise, and you can open another skill at 1.
45 Karma, Attribute 3 to 5, +2 Dice all skills and related dice pools.
or
45 Karma, +1 to three skills, +4 to the two most common dice pools, +3 to the two next most common dice pools. Not a lot of Attributes with more than three Active skills.
Anyway, from a mechanical standpoint most builds are better with higher Attributes and picking up skill points with Karma. That math only changed a little bit between 5th and 6th. It's less loppysided than it was, but the math still strongly favors starting Attributes over starting Skills.