Anubis.
Your replies consist of quoting the rules verbatim. Rules that I think everybody are acquainted with at this point (including myself, who took the longest to understand them). You're not saying anything new, nor do your replies constitute any kind of argument.
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Upper_Krust.
More math for you. By calculating XP for individual monsters, rather than groups of monsters, sometimes you get less XP, sometimes you get more.
When you get these XP discrepancies, it is usually around a factor of 0.1 or 0.1R%. As in the differences between 200 and 225.
For example, in the more XP category, let's say instead of sending 4 hobgoblins at 0 CR against a party of 1st level PCs, you send 5 hobgoblins instead. The EL does not change at all, but now each characters nets 250 XP each.
Ultimately the difference is negligible, and certainly not enough to diminish the exaggerated XP totals your CR system churns out right now. In fact, it increases them in many cases. So whether you use "group" or "individual" XP for PC opponents, the problem of inflated XP does not go away.
I'm not sure how right now, but I'm certain your solution can be found through calculating EL bonuses for "numbers" the same way for both PCs *and* their opponents. To make this possible, however, I'm pretty sure the CR to EL values you consider sacrosanct will have to change.