scott adkins is pretty agile,he is more of an athelete and gymnast than fighter, and his fighting is good but not comparable to Tony Jaa. That's my view. If scott adkins happens to be your idol, sorry bro, didn't mean to cause any discomfort, Just my personal opinion.
Tony Jaa has a history since a childhood and how beautifully he has mastered the art, we can see it on movie.
This is what Tony Jaa can do which no other martial artists till this date can do :D