A comment by a security-analyst who chooses to be ananymous
Although the vast majority of the West knows about, and acknowledges the fact that Ottoman Turkey committed the world’s first* genocide in 1915, there still remains a small cadre of individuals who desperately try and convince people otherwise. Usually, they will attempt to do so by demonizing Armenians, in essence arguing that they deserved it, or else they will claim the deaths were unintentional. However, a few Turkish agents try and use numbers to convince the uninformed reader that there was no genocide. These propagandists understand that those who use numbers often have reputations of being rational and objective, and are therefore more likely to be listened to if they do the same.
 
While it has become something like an endangered species when it comes to Armenian Genocide denial tactics, the notion that there are too many Armenians alive today to have allowed for a genocide still occasionally rears its ugly head at conferences and on websites; even the Turkish Foreign Ministry has used this polemical statement.*
In any case, it’s high time to obliterate this so-called argument by using rather elementary math. Wikipedia states that there are between nine and ten million Armenians alive today. For the purpose of this exercise, let’s just agree on 9.5 million. Most scholars, including Turkish and Armenian historians, agree that there were around three million Armenians in the world before 1915. Using this number one can calculate the growth rate needed to arrive at today’s figures. One set of calculations can use the communal violence theory where only 400,000 Armenians died, and the other set of calculations will use the figure that 1.2 million Armenians died in an actual genocide. Therefore, the initial population figures in 1916 are 2.6 million and 1.8 million respectively. With these numbers, one can use the equation T=Pe^(rt) to find the average growth rate, where T=today’s number, P=past number, t=time in years, and r=average annual growth rate.
Communal Strife Calculations                                   Genocide Calculations
T=9.5 mil                                                                T=9.5 mil
P=2.6 mil                                                                P=1.8 mil
t=92 years                                                               t=92 years
 
r=1.4% per year                                                       r=1.8 % per year
As compared the the CIA Factbook’s .88% growth rate for the US, a 1.8% growth rate for Armenians is quick, but not abnormally so, because there are numerous counties whose growth rate is, in fact, much higher than 1.8%. For example, according to the CIA Factbook lists Bangladesh’s growth rate at over 2% per year. Therefore, without any miracle, which Genocide deniers claim is necessary, the existence of a genocide can still allow for the present population of Armenians. 
Nevertheless, it is likely that that even a 1.8% annual growth rate is higher than the actual rate, because many present day Armenians counted in the total number of 9.5 million, are 3/4, 1/2, 1/4 Armenian. Let’s then make a reasonable assumption that of the 9.5 million Armenians, that 1.5 million are half (assuming the 3/4 and 1/4 armenians counter balance and average to 1/2 as well). Reasoning that a population will grow twice as quickly if that entire populatioin breeds with external populations, one can logically divide the 1.5 mil figure in half to .75 mill. So the adjusted Armentian population today is actually 8.75 million. With this corrected number, the new post genocide annual growth rate via the T=Pe^(rt) equation, is 1.7%. A 1.7% growth rate is not unreasonable by any means, the US itself held similar growth rates earlier in the 20th cenury, and many 2nd world countries have this growth rate today. 
Lastly, one can also make the unscientific observation that immigrant families often have larger families than native ones, and most Armenians outside the Republic of Armenia are immigrants themselves, or decended from them. 
In conclusion, Armenian Genocide deniers should continue to use this denial tactic, because it makes them look ridiculous and ignorant. 
*The Herero may have this title.
* See: http://www.haaretz.com/hasen/spages/914602.html