Usually with ferts like this one, it's more nitrogen in veg and less in flower. Not sure why anyone would say use the same amount all the time as most manufactuerers say to vary the NPK ratio. Going with the second formula sounds better but I don't use that product so can't say for sure, but it seems right. All depends on what kind of problems you have had and will have in the future. Sometimes you just gotta experiement. I think ideally what a grower does is use a TDS meter, also called a PPM meter. Get ferts to about 1200 ppm with the high nitrogen version for veg, then switch when flowering to a high phosphorus version. I guess fert companies take it for granted everyone will have a meter and know how to use it.