User blog:Thecockroach/So, is it EVER worth it, to use a 4* card as a feeder for a 5* card?

Yup, just as the title states. I'm asking for someone else. I told her, that it's a waste, they don't give NEARLY enough exp to make it worth it, unless maxed, and silver apples are MUCH better. But to be perfectly honest.. she is right, that is just my opinion. I don't have enough solid facts to actually back it up, so I wanted to ask you guys. Since you are far more experienced in this area probably, and probably know better then I do. All opinions/facts/stats are welcome, so please, lay it on me.. :)