Consider the following: When you are using a pike, you are running around with a 3m long stick which was made to kill people from that particular range. Meanwhile, your opponent, the mauler has an 8kg heavy rock glued to a stick which is like 80cm long, made to violently rape people from THAT particular range.
Also when you release a swing with an 8kg heavy maul you can't stop it and it will gain speed.
ALSO you have 5315 sidearms on you, why don't you just use them?