I have bashed Isaako pillar to post but seriously.. he's a genuine match winner at times with his fantastic footwork and his ability to come in off the wing and hit a field goal, he's also very reliable kicking goals.
He just has this tendency to drop the ball at the worst moments, our first game against the Cowboys is probably the one that tilts me the most. Also that brain fade he had where he tried to play to get the ball back and let it go dead with barely enough time to get take a 20 metre tap, the only thing they could have done with the time remaining is score a try and that's what they did.
It's not like Tesi Niu is that much better than Isaako in attack, it's just that he doesn't tend to make basic errors at horrible moments. He still makes handling errors but he looks like he has the ability to cut it out of his game and be a consistent fullback with the ability to provide a spark of brilliance. I don't see that in Isaako, I see a guy who can score you 2-3 tries after he lets in 2 or 3 himself (that Titans game for example).