Ok, no need to overdo the North love. Give him a few years to see if he can be as good as Lomu, he's got the potential, but he's not there quite yet!
As for Cuthbert. It's not just that he's only been in the Blues squad for a few months, but I believe he's only been playing rugby for a few years full stop. He seems to be learning quickly, so he should improve futher. Things like defensive positioning can be taught, his power and pace can't. I'm not totally sold on Cuthbert, because I'm not sure if he's anything more than a very big and very fast player, time will tell. He's shown with the Blues that he's a natural finisher, so that's a good start. His first try for Wales could really boost his confidence and maybe then we'll start to see the best from him. Worth another shot against Scotland imo.