allowed error in V2 during OEI climb?

[rhovsquared]

With todays massively over powered twins (737, 757,777 A320, etc.) during EFATO is maintaining V2 as important as it formerly was or does this apply to solely to WAT limited or obstacle limited departures? or does the AFDS command a speed between V2 and V2+X that gives the best OEI gradient for the net flight path, with V2 as the absolute lower limit?

Thanks in advance RHOV