First off, they're two different strains! Another thing that comes to mind is that excess nitrogen can inhibit flower development as the plant keeps pushing out leaves to make use of it. Here is
@MrSauga's description I'm paraphrasing (sorry, can't "quote" a locked thread):
"An optimum level of nitrogen throughout the plants growing phases will result in vegetative vigor, bright green leaves due to chlorophyll production, increase the number of leaves and size of the stems. Other advantages to an optimum level of nitrogen include an increased resistance against insects and fungi.
On the other side of the pond, too much nitrogen reduces yield and flower quality and causes weak stems, excessive foliage growth, delayed ripening of your fruit and creates a less sweeter end product. Your plant will show little resistance to pests as well.
More importantly though is too much nitrogen during the flowering stage will cause your plant to produce much smaller buds."
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