The Anubis still carries the most firepower in its weapon class(6). It also has that coveted 360 degree turret. The weapon arrangement is actually superior to any of the other 4 VHF ships- the weapons converge from all sides of the cockpit, from nearly the same distance. Most other ships seem to have the greatest accuracy when in either a sharp dive or climb, losing accuracy when turning horizontally. The Anubis appears to have no such disadvantage.
You do have a point but I believe what is more important is weapons grouping. For example, the Titan has it's class 10 weapon slots grouped tightly. In one volley, the Titan has a better chance of letting all four of it's class 10 weapons slot guns to hit dishiing out more damage.
strafe!