Personally, I think we are very fortunate to have both A2A and DCS, both of which have taken the flightsim experience to a level that many of us could only dream about as kids and with a tight budget. A2A have saved me a fortune with addon aircraft, quite simply, I rarely buy anything other then A2A products for FSX, little (in my opinion) comes close, DCS, well, what can I say, a different experience that quite frankly still has me giggling like a kid when I think I can manually start an A10/Blackshark, perform mission criteria, all for less than a cost of (at British prices) for a round of drinks.
When so many companies are looking towards shoot 'em ups, I don't care much for peeing contests about which P51 is the more accurate, I am confident that both will be as accurate as possible but reflective of the engines on which they will run. Power to both A2A and DCS, who knows, maybe some collaborative work could be done in the future to further dominate the sim market and keep on producing excellent products.