?heirlooming accuracy

[Murchad]

I was going to heirloom a hafted knobbed mace
but when i retired it showed the 1st heirloom of the mace having less damage and less speed, on the heirloom thread on the forum this is what it lists the heirlooms as
weight 2.8
requirement 12
spd rtng 95
weapon length 133
swing damage 31, blunt
thrust damage 21 blunt
Knockdown
Gen1= 96spd 33blunt 23blunt
Gen2= 96spd 35blunt 24blunt
Gen3= 97spd 36blunt 25blunt
what will actually happen when i heirloom it

[Cyclopsided]

What it says in itemized heirloom thread is what actually happens.
What it displays on the selection screen is incorrect.

[EliteDragon]

spd rtng 95
swing damage 31, blunt
thrust damage 21 blunt

Gen1= 96spd 33blunt 23blunt
Gen2= 96spd 35blunt 24blunt
Gen3= 97spd 36blunt 25blunt

I'm pretty sure the numbers are higher....not lower. In-game might not be right all the time.