Your kidding right? Russian jet engines are notorious POS's and the Chinese ones are even worse. So bad they mostly have to buy from the Russians. The advantage of high tech airframes, avionics, weapons, training, in a modern day air war is so overwhelming there would be no "long term conflict" with anyone we might go to war with. None of your post makes any sense. American fighters are far, far easier to keep in the air to anything made in Russia. I thought we got past this kinda nonsense 20-30 years ago.
Your comparing Russian replenishment and maintanance with American? Are you mad?
http://russiatrek.org/blog/army/abandoned-russian-airbase-photos/Russian Equipment is top notch alright, here's a Russian airbase practically abandoned and ignored, I've read stories of Su-25 Pilots refusing to fly due to the aircraft not being Maintenanced for years, also fact the Russians did not pay the pilots - they had to wait months to get pay.
Here's some info:
The Air Force continues to suffer from a lack of resources for pilot training. In the 1990s Russian pilots achieved approximately 10% of the flight hours of the United States Air Force. The 2007 edition of the IISS Military Balance listed pilots of tactical aviation flying 20–25 hours a year, 61st Air Army pilots (former Military Transport Aviation), 60 hours a year, and Army Aviation under VVS control 55 hours a year.[9]
In February 2009, the Russian newspaper Kommersant reported that 200 of the 291 MiG-29s currently in service across all Russian air arms were unsafe and would have to be permanently grounded.[19] This action would remove from service about a third of Russia's total fighter force, some 650 aircraft.
The list goes on and on, the Su-27 might be a WOO design, however I would not want to be flying one in Russia right now.