This thread has nothing to do with flowering! I was talking about cloning. I'm also under the impression a clone (exact replica) would be the same over time. As far as which grows faster, who cares unless your using feminized seeds right? You have to get rid of males if you use regular seeds and that is extra time and work!
Sorry, I was just replying to the other guy's Q. To answer your original question, a clone is just that. A genetically identical copy of the plant it was taken from. They don't lose potency over time (may not be exactly true, but true enough for practical purposes), and you could take clones off clones off clones, and not notice the difference.
The only time you will notice the difference, eventually, is if you take a clone, then flower/reveg it, then take a clone, which you flower and reveg, and repeat the process. This is because the flowering process weakens the genetics. As long as your clone has never seen a flowering cycle, either from itself, or the plant it was taken from, you will be fine.