Ehh... I wouldn't say that at all. He's kind of an old school muay thai brawler, with pretty bad pure boxing and movement.
I actually think Miller has the more technical stand up. He has pretty nice elbows which should pay dividends in this matchup.
He not only has superb offense but also great defense
He mixes up kicks punches and knees in combination for a varied attack and has great single strike power
He knows how to use angles has good head movement and blocks well too
I think it comes down to sizing with Thiago, has he ever been beaten on the feet by anyone his own size bar gsp with his TD threat? I dont think he has