Well when the Warriors got up 3-1, they loss Bogut due to injury, they loss Draymond Green to suspension, and Andre Iguodala was playing with a bad back, but had no choice to play with the other starters gone.
So yes... if Kobe was down 3-1 and had the benefit of playing a team without their 3 starters there, Kobe would have done the same thing LeBron was able to do.
If Draymond alone didn't get suspended, they would have closed the deal at 4-1, easily.
But the better question is, how many rings would LeBron have gotten had he stayed in Cleveland and built around him with LEBRON carrying the team on his shoulders every season.. hmmmm....