
I tried doing some calculations, but I'm not that good with numbers

Attack Speeds:
Axe: 1.33
Sword: 1.33
Hammer: 1.75
Axe and Sword with 33% boost:
1.33*0.66=0.8778
Axe and Sword at five seconds:
5/0.8778=5.7
5/1.33=3.76
3.76*2=7.52
Hammer with 33% boost:
1.75*0.66=1.155
Hammer at five seconds:
5/1.155=4.33
5/1.75=2.9
2.9*2=5.8
Testing it at 10 seconds:
Axe and Sword at ten seconds:
10/0.8778=11.4
10/1.33=7.52
7.52*2=15.04
Hammer at ten seconds:
10/1.155=8.66
10/1.75=5.71
5.71*2=11.42