Up on the feet, is there really any difference at all in how Russian Judokas approach Judo as opposed to Sambo?
Aside from things like gripping penalties and the fact that you have to remain standing in Sambo after executing a throw to get the Ippon, I cannot identify any difference. Can you guys? If so, what would you say that those differences are?
I have trained in Russia on 8 occasions(going back in May :) ) studying judo and sambo.In Russia judo and sambo are different sides of the same coin, so to answer your question no there is really no difference in the approach. You'll see a russian use a sambo throw and then he'll use a classical judo technique.
In MOST cases if you practice judo you practice sambo.
In fact everytime I have been there the judo and sambo guys have trained together. During randori/sparring you agree on judo rules,sambo rules, or a combo(my favorite).
During my first trip it disconcerting how the Russians could and would attack from any grip or angle.
Sambo doesn't lack drag downs, its just that they're not scored as high. In Sambo for a "Total Victory"(Ippon in Judo)you need to throw your opponent squarely on his back while remaining standing or submit him via armlock or leglock.
"there should be a rule both in Judo and Sambo that if you do follow to the mat you have to transition into superior position and maintain to win"
There may not be a rule specifically stating this but, in the end, you will have to maintain a dominant position of control to either score a hold down for points or set up a submission for the win.
The notion of scoring total victory only when standing in sambo, as I understand it, comes from the combative history of the art which dictates that going to the ground is impractical in a real combat situation. In other words, stay standing and fight the next guy or get the hell out of there. When sambo was created, it was primarily a H2H system, not a sport. When the sport evolved out of it, the total victory rule was a hold-over from the H2H philosophy.