His style just doesn't match up good against izzy, he's probably the second best if not the best fighter at mw, but styles make fights and outside of paulo costa, who was easy pray for izzy considering his lack of movement or defence. Rob is always gonna be at a disadvantage if he fights like this.
His hands low, karate/boxe style its the easiest to counter if you're izzy, its a style that makes you overextend a lot but gives you mobility, most fighters are not counter punchers so thats usually not a problem but against izzy its deadly.
I know it will sound like im saying this only cause he won, but the only way to really beat izzy in a striking match is to fight like jan. High guard, never extend fully your punches, defend against leg kick and don't be over Agressive, Unfortunately thats the opposite of rob style.
I really like rob and want him to be champion, but unless he completely changes his style and aproach for this fight i can't see going his way. I hope im wrong though.