Stupid charge attack

Problem:

i was doing real well in the arena when suddenly i bumped into some noobs who repetitively used the charge attack. i got wrecked every time accept once. when they do charge attack into a kick it does not disarm them and the attack charges in a few moments. i am sure some one will put a reply on here telling me how to beat a charge attack but i already know all the tactics and tricks. but now i am only earn 17 coins per day compared to my old 34 coin's a day. 

solution:

make charge attack use stamina. also make it take 30% longer to charge up. last of all make it have a re lode of 5 seconds before it can be used again.

i'm sure that some legendary guy out there could beat them but i swear i could to without a problem if these rules were added. it is as close as the game gets to cheating.