Both are large surface combatants, with the Russian nearly as large as the cruiser. Both are gas turbine powered and about 30 years old.
Looking at the wakes of the ships, it appears to me the Russian did in fact change course to close the Chancellorsville and veered away only at the last moment. I do not see in the video the crash stop by Chancellorsville that was reported. Looks almost like they are ready to conduct a highline drill. Maybe the Russian would like to trade movies.
With Coast Guard cutters operating in the South China Sea we can probably expect that they may encounter similar behavior from the Chinese and Russians.