Roberts could very easily have won halfback of the year a couple times. He was widely considered the best halfback in the NYC for the time he played. I'm not sure how old you are or how much of this you saw, but there's no question that Roberts at least appeared to be as talented as any half to have come through in recent times. The guy was a game dominator at that level. As was Hunt.
But let's no get carried away with Hunt, up until the start of this season he was headed for the chopping block at the Broncos, and that isn't a BS statement, that is fact. That's nearly 5 seasons of gross under achievement. So you're entire argument around his FG achievements are irrelevant to the argument of whether Roberts can make it or not. He debuted in 2009 mate, Roberts has another two seasons to run before mirroring Hunts timing of a breakout season
This was all I was trying to establish anyway. As Hunt has demonstrated, a break out season is exactly that. It's unpredictable, unforseen and unexpected. All I'm pointing to is that Roberts has loads of talent and is still very young and under a new coach his role could change in the slightest way, then boom, he does a Ben Hunt
Then again, he'll probably be lacking again this season and the next.