Looks like it's up to me to say it:
Hitmonlee is borked.
There are currently 2 Pokemon in the tier that can stand up to Hitmonlee - Drifblim and Golurk. Golurk can take pretty much anything fairly well, but Drifblim is destroyed by Stone Edge. Regardless, everyone was thinking "Oh, Hitmonlee will be fine, Duosion will handle it no problem!"
Adamant CB Lee does ~46-54% to Max/Max + Eviolite Duosion. Just saying.
Seriously, it alone is the reason as to why I'm currently undefeated this tier list thus far.