Are the 3 demons glitched

I have 236% str and over 600 atk.... without demons range is 188k clean, with 1 demon it goes to 189k, 2 demons it goes to 191k and 3 demons it goes to 193606. Still doesn't seem right because even getting 1 more on my noble mind on my cygnus adds like 1.3k to my range and that 4 atk from jett added almost 3k

Because theres some funny little thing called weapon attack multiplier. Spear 1.49*(4 * STR + DEX) * (Weapon Attack / 100) vs Knuckler 1.70*(4 * STR + DEX) * (Weapon Attack / 100).

Warriors usually have high range from before and 15 w.att doesnt give them much, especially not if you have like 270 w.att or so on your main weapon.