Ok I'm seeing 11 from Str and half level, +2 from Enhancement and +1 from Heavy Blade Expertise and 3 from proficiency for a total of +17 to attacks, and then Damage is 6 from str, 2 from enhancement, 2 from Iron Armbands and +1 from weapon focus for +11. So yes it does look like they're using dex instead of strength for those attacks.
Now for a counter question. Starlight Goggles are for what exactly? Half-Orcs have Low-Light already