All Stats+1 is more OP to me than atk/matk+5 IMO. Yes, atk and matk wise, Jinn Marin is stronger especially with int and dex +1 but there are still many things that all stat increase gives like crit/p dodge, aspd, def, hp, etc., regardless if it gives only a miniscule amount or not. It will be either return the effects or nerf Jinn Poring too to have Jinn Marin at least more value than the other. Also I found out that Ninja Scroll is actually more OP than this to high MATK users, especially to those who have more than 700 total matk (1% of 700 is 7 while the other gives 5 fixed matk and an additional 1 matk from int).
And also it seems the "Stat" Biscuit will still give error when clicked. I'll try to test it again since the last time I clicked it is 1 day before maintenance.