thats the point, wouldnt u be embaressed if i beat u with the N64 link against the Brawl link? for some people they may like particular styles better than others. like for example the N64 luigi vs GCN luigi...or the GCN fox may end up being better overall than the Brawl fox...minus the final smash. and for the sake of this mode the FSA may/can be turned off
u gotta remember the lag in some of the N64 attacks is not even present.
example: Dk's air intercept attack is instant vs GCN Dk where it takes a second to exucute an takes some recovery time