Bud Candy and Bud Factor X definitely is not the same product. One is for smell and flavor, the other is used for further bud development with a PK booster. Definitely different shit. Carboload and Sweet Leaf together are Bud Candy. Bud Factor X is a completely different product. You can have nutrients derived of the same thing and have completely different substances. Hell, in that case every nutrient is derived from the same thing. Lets just throw bat shit into our reservoir and call it as good as using bennies, base nutes, and bloom enhancers. It's all the same thing, right?!...
I personally think Bud Candy makes all the strains taste alike. Not saying the same exact taste, but you can definitely tell a similarity in all of your strains when using Bud Candy. I haven't found that BFX does that or even has close to the same effect as BC.