Muay Thai for the Most Part is an Attribute Contest

[Gavin Smith]

Doesn't bobbing, weaving, really good in/out movement, stick/move, working angles, throwing "flowing" combos, and all that jazz require just as much in terms of attributes as Muay Thai's ability to take punishment, hit hard, clinch hard, etc...?

Those are skills (skill = something learned and developed through practice)

As opposed to abilities (something a person has naturally such as speed, power or quick reaction time)

TS is saying that Muay Thai is more dependent on abilities and boxing is more dependent on skills, obviously to be successful at either requires high levels of both skill and ability