I don't know, but some players excel in club rugby but aren't quite good enough to reach that next level.....
Dan Penca comes to mind.
Yea mate some guys just can't take the step up - others don't really get the chance to show their worth - hard for guys like Penca and Sok to really impact higher level rugby when their chances have been limited to say the least.
Unfortunately for Sok and Penca I think the chance has now gone for them to ever make a real step up - Sok must be in his early 30's? and Penca must be 29/30 by next season.
Kaino has been outstanding this year in Club Rugby so you would think the natural progression would be to move him into a higher-level and see what he can do.
Talking about Penca - he has played hooker on and off this season - I know its a very open ended/stretched question - but due to his size/ability - do people think if he had been a hooker from the get-go - could he of made it to higher honours?