Ho? that so? Did the US not cover up the deaths of an extra 3 million southeast Asians they killed? They claimed they only fought in Vietnam and killed 1.1 million Vietnamese, truth was they attacked neighboring countries like Laos and Cambodia killing over 3 million more than their 'official' number. When the evidence came out was their any apology?
Did the US apologize for its use of Uranium depleted rounds in Iraq? Rounds that to this day and for a century to come will cause babies to be born disfigured and adults dieing before their 40th birthdays. Did they apologize for these things?
The US is a typical superpower, no different from their predecessors. They can do anything, whether they apologize or not matters little because no one has the capacity to make them apologize. There are countless examples of US cruelty that they did not apologize for that I an list. The US is not 'far' better than Russia as you put it, not at all.