Fuck.
Just used my two heirloom refunds on my Poleax and this is what I got.
Powerful Poleaxe
Cost 6027
weight 4
requirement 17
spd rtng 88
weapon length 141
swing damage 44, cut
thrust damage 35 pierce
Can't use on horseback
Bonus against Shield
The information on the first page is incorrect. I don't know about all polearms but this one went to Heavy -> Powerful. It lost speed in the first heirloom, and remained the same for the second. The cost also went down for some reason. The weight also increased by the same amount if it was a 2h blunt.
I think the stats on hierloom upgrades are fucked up because I don't think anyone would ever do this on purpose.
I would not recommend anyone heirloom the Poleax at the moment. Hopefully they can fix it
I might have well bought a german poleax instead of blowing my heirlooms on this garbage.
edit: looks like it is bugged, I can't even use it in a battle. I can't select it from the item list in game, and if I set it as part of my default on the website it just doesn't show up.