Hmm ... interesting ... because then is hard to match it ... as u see from Forciu white+0 and Forcium blue +0 is difference like it had 2 upgrades so it has +12 more attack and +8 more magic attack before ep4 After ep4 +12 more attack bonus stays but magic attack bonus is lowered to +6 only ... So ok here are my findings for all upgrade system and tyvm for helping me to find this out

But please make a picture so i can be 100% sure of it

Other upgrades:
Code:
SWORDS:
0-3   : 3 attack, 2 magic, 12 att rate
4-6   : 4 attack, 3 magic, 14 att rate
7-9   : 5 attack, 4 magic, 16 att rate
10-12 : 6 attack, 5 magic, 18 att rate
13-15 : 7 attack, 6 magic, 20 att rate

ORBS/CRYSTALS:
0-3   : 3 magic, 2 attack, 12 att rate
4-6   : 4 magic, 3 attack, 14 att rate
7-9   : 5 magic, 4 attack, 16 att rate
10-12 : 6 magic, 5 attack, 18 att rate
13-15 : 7 magic, 6 attack, 20 att rate

ARMORS:
0-3   : 3 defense, 3 def rate
4-6   : 4 defense, 4 def rate
7-9   : 5 defense, 5 def rate
10-12 : 6 defense, 6 def rate
13-15 : 7 defense, 7 def rate
Forcium & Lycanus's upgrades:
Code:
WEAPONS:
0-3 : 5 attack, 3 magic, 20 att rate
4-6 : 6 attack, 4 magic, 24 att rate
7-9 : 7 attack, 5 magic, 28 att rate
10-12 : 8 attack, 6 magic, 32 att rate
13-15 : 9 attack, 7 magic, 36 att rate

ARMORS:
0-3 : 5 defense, 5 def rate
4-6 : 6 defense, 6 def rate
7-9 : 7 defense, 7 def rate
10-12 : 8 defense, 8 def rate
13-15 : 9 defense, 9 def rate
My comment: IMO they nerfed Forcium ... lower grades get boost as they will gain more stats as Forcium.