Thats not exactly what it's supposed to be...but they are putting things in Brawl that has been in smash since 64 like L-Cancel, Techs, and Hit-Stun things that this current smash game lacks [even though there is nothing wrong with that], thats all
Plus as of now [because who knows what the future holds...] it evens out the competitiveness of the roster -- now the vBrawl low tiers can compete on the [just about] same level with the vBrawl high tiers
Example: DK can now really compete with a D3 or even a Marth [though it's still slightly harder due to character reach and speed] but it's even
more so possible!