I'm not going to stand here and say that lemons wouldn't be good in orange juice, because I'm sure they would be. It's like a lemonade with orange juice. That's not so bad. The problem I have is that it can't be so good that it dictates a sign. That's not the headline for lemons. A good headline for lemons would be, "goes great in lemonade." That makes a lot more sense to me. I don't even think I need you to tell me what lemons are good for. It's not like people have forgotten how to use lemons.
I'd be mad even if these were oranges and it said "perfect for orange juice." It's like, duh. I get that it's perfect for orange juice. You know why? Because orange juice has orange in the title. It's kind of a given that it'll be good for orange juice.