On the subject of Animus weapons and bonus stats.
Don't pay all THAT much attention to the Bonus stats. A weapons main Stat useually makes far more of a difference in damage and healing.
So if your options are, I level 90 weapon with great bonus stats, and a level 100 weapon with a less than ideal bonus stats, the level 100 weapon will still end up blowing it out of the water by default.
Now, if its a difference between 95 and 100, the bonus stats can theoretically make up the difference, since the main stats are a lot closer.
Even this however is, a little iffy, in my experience.