Level Requirement for Boss Damage

Unique: +% str, +% dex, +% int, +% luk, +% hp, +% mp, +% acc, +% avoid, +% att, +% magic, increase critical rate, +% damage, +% all stats, ignore defense(requires level 50), increase damage on bosses +20%(requires level 50), increase damage on bosses +30%(requires level 50)

According to Cyanne's post about possible cube bonuses it looks like boss damage requires lvl 50.
I guess my first question i,s is this confirmed? Cyanne sounded confident about what was said but not positive, seeing as it was taken from the data I'd imagine there is some backing to it.

The more important question, when it says level 50 does that include lvl 50 weapons? Educated guess says it does but there is always some doubt for me about these level things because of how confusing they were at first and I'd like some confirmation if possible. More needed just for general knowledge than anything I'm actually planning on applying.

1) Yes it's confirmed.
2) Yes you can get boss damage on any weapon over level 50.

Cool, thanks.

But you still have to get it to Unique to get that bonus