Sukhoi I believe, acquired/borrowed heavily from, MiG's research and development of the Skat.
Doesn't look like it, to be honest. For starters, Okhotnik is about 50% larger and - such as the degree of design freedom in a very low-observable flying wing allows - many aspects of the configuration are radically different. Leading and trailing edges on Skat had the same sweep angle, the intake duct was bifurcated rather than serpentine for line of sight blockage and the main landing gear retracted inward (think MiG-21). Apart from the cranked kite planform and carrier ops equipment, Okhotnik arguably has more in common with the X-47B!
I like Sukhoi's intake design better, but considering it could have been available almost 10 years earlier and given MiG a much more sustainable product than minor MiG-29K mods, Skat is a huge missed opportunity. When it was unveiled in 2007, the mock-up was already quite detailed with proper landing gear, control surfaces and working weapons bay doors - by then nEUROn display models still stood on plexi-glass poles! But 5 years on, the latter had flown while Skat went nowhere, a victim of the Russian military's total lack of vision regarding unmanned vehicles at the time which also severely delayed HALE/MALE UAVs.