Range
Range makes no sense, there is no kicking range just boxing and then everything else depends on movement of the fighters, this makes for weird gameplay.
Forum Discussion
Yeah I find this atrocious. When inputting the head kick I understand if you're too close it will go BK and if very close a LK but it seems very random. I fish for headkicks when opponents whiff on head and body kicks and I regularly end up throwing a BK not a HK. Surely if I am at a distance where the opponent is whiffing then I have to be in range to let rip with the head kick and not a body kick. Especially when you can duck headkick as clearly in this scenario you're closer to your opponent than when you evade their kick by them whiffing.