Top stars in the KHL receive (officially, it'd be much more through various shady arrangements) circa 2.5-3M dollars (some more, like Kovy and Dats, they were close to 4.5M last year, i think, and it was twice that amount before the currency crash of 2014), Mozyakin (perennial top scorer) was demanding, according to the rumours, around 5M (not sure he got it, but the Magnitogorsk signed him before the start of the next pre-season, so probably it was a generous counter-offer). Two oligarch teams (CSKA and SKA) which had been poaching players left and right for the last three years ('everything for the Olympics, ahem') have 3.5 B and 2.5 B roubles payrolls (which translates to $58M and $41M, three or four times over the official cap), 'ordinary' top teams like Ak Bars, Magnitka, Salavat, Avangard have 1.5-1B payrolls ($15-25M). I'd say most of our foreign and domestic top players in these teams are either failed prospects (like our Jiri Sekac, Alex Burmistrov or Anton Lander) who could not make into top-6 in the NHL, or people who are simply not suited to play on the small rinks (like Azevedo or Omark, for example).
In regards to whether trash level NHL teams can easily beat our top teams, I'd not be so sure (it heavily depends on the rink type and rules), but on a level playing field, I'd say SKA, AB, Magnitka, Salavat, Lokomotiv and Jokerit would probably beat the Sabres (today's game was very slow and atrocious in general, btw), Canucks and who else is at the bottom right now.
PS I don't really get the sneering attitude of the NHL fans towards the 'eurotrash' leagues - you constantly steal our best young players and mostly make them trash / irreparably broken . If you take just our team, we lost Burmistrov (he was at 40+ points pace here at 22), both Svechnikov brothers, Radel Fazleev and Artur Tyanulin, and if you take whole region, Nail Yakupov too. Only Sergachev seems to have adapted to this playstyle, and it's just his first season (I remember Tyler Myers and shudder). While I agree this Olympics is at the EHT level (EuroHockeyTour) or even below, many players are not that bad, actually. Some simply chose to play euro rink hockey as it suits them better, others don't want to get trapped by ELC and pigeonholed into a bottom-6 role if they are not exceedingly good.