Just watched that Japan match, he pulled his knee pad up for like a second. Big difference between that and taking like 10 seconds to completely take your headgear off and put it back on, which he did in the Cardenas match as well between the first and second periods. Also several instances of being slow to get back to the center for restart, which Pyles acknowledged at least once in that match also.
I don’t know if conditioning is an issue overall for him, I’d think not based on his world title, but it sure seemed like he was gassed at times at CKLV. You of course are welcome to disagree.