Nick was also a kid. And in that fight everyone was expecting lawler to KO Nick the same way they would now. But even now/today Nick would KO Robbie.
I'm not convinced that he would. Nick had something like the element of surprise last time. No one expected Nick to have much to offer on the feet as you mentioned and Lalwer was rushing in far too agressive. Nick suffered a KO loss earlier in his career. It doesn't mean that guy would tool him today, though.