I agree the ink is more faint than should be, also seems like the blue dot is smaller - but it is hard to see the dots. I can't say for sure from the picture, but someone with more experience with Primos (like SB) should know.
What do you mean worked fine? Most fake primo has some test of deca in it. Have you used primo that you know for sure was real before, to make the comparison? Everyone I have talked to has said fake or questionable at best.
What should one look for when getting primo (ie labeling, colored stripes...)? I've been looking into a cycle of primo for a few weeks and it seems that everyone is so skeptical about it bc of fakes.. What are some of the better companies that make primo that i should look for that might be my best chance for it being legit?