The major architectural difference is that through enforcement of their own domestic legislation, China and Russia both force their ISPs to run all international internet traffic through certain choke points (chinese great firewall, russian "SORM" traffic interception boxes and similar).

Whereas this is for the most part not the scenario for major IP transit providers in Europe, the USA, Canada (top 50 by size CAIDA ASRank scale/scope ISPs ranked by ASN which are not Russian or chinese).