There are no practical uses for this in an Any% run. 1.0 has a glitch that allows you to do an infinite amount of jumps by throwing up and jumping at the same time your partner returns to you.
Krow, Kreepy Krow and King Zing Sting all move slower in 1.0, making the fights slower overall.Bramble Scramble wrong warp is also done differently in 1.0.Castle Crush skip is done differently in 1.0.The main difference for speedrunning is that 1.0 cannot use most wrong warps, as they softlock the game.
VC has faster transitions than SNES/Emu, meaning it has less black frames and is faster overall.You cannot do the D-boost after halfway in Windy Well on U 1.0 since the camera will not follow your Kong.