I'd say it's objective. Turner hasn't shown much of a step or swerve. Inglis has that plus good speed, balance, more skill etc and would have scored that try on the weeked. I'm not a mungo but Inglis is a freak and would clean up in union IMO. Anyone care to disagree?
No, subjective is correct.
Turner showing step and swerve:
[video=youtube;EsT_rUDhpYE]http://www.youtube.com/watch?v=EsT_rUDhpYE[/video]
Inglis has not got more swerve that Turner because it's harder to duck and weave in a body that big.
And as for "more skill", Turners strengths are under the high ball and Inglis' are in offloading. It's different rather than better or worse.
I wouldn't question that Inglis could do very well in union but the sports are different games so who knows.
EDIT: I am not a Turner fanboy in the least, quite the opposite. Inglis is obviously a better league player then Turner is a rugby player.