Ehhh it is kinda noticeable tho. shyt used to happen to Sergio Martinez too, but he always pulled out a 2nd wind. Plant kinda cruises through it. I wouldn't call it surviving, but he boxes to hang on to a lead a bit. That's why so many nikkas in here be saying he has no stamina.
I try not to take dude's predictions too serious even tho he has respectable boxing eyes. This the same nikka that picked Rios over Bradley and that Jrock had the best chance of beating Canelo at 160 the same day he got murked by Rosario.