Game Mechanics: hit rates, DEX and AGI

[God-King Abacab]

I've noticed the following when fighting a lightblue mob while all skills are set to level maximum:

AGI: 77
DEX: 94

32/45 hits would land in other words my melee swings would land 71% (3/4) of the time

I would proc berserker strength and the following would occur

AGI: 71
DEX: 94

11/20 hits would land in a sense melee hits at this rate would be hitting for less than half the time or 45% (mob was fleeing at this point as well)

This has been reoccurring every time berserker strength would proc, and it seems that the lower your base agility the less often you would land a hit regardless of dex.