Deathtrap, we've been working with the NOC on this, and both _CN_ and PaulMH represent our network architecture and engineering teams, so you've absolutely got the attention of the people who make the changes and decisions here.
As far as I can tell, response times exiting from level 3s network are consistent. (and therefore, irrelevant of the number of hops or variable response times reporting by intermediary hops) level3 are performing fine. It really doesn't matter how many hops the traffic goes through if the last hop has a stable, low latency.
What we believe is that there are two routes for traffic from level3 to Ubisoft. Ubisoft themselves have chosen to peer with only 2 providers, meaning our traffic can only hit them through those two providers. If one of this is preferred by Ubisoft (because they are cheaper for example) our traffic is likely to hit them via that route. Our plan was to attempt to change some of our routing configuration to see if we can flip between those two providers to determine a difference, but we can't really control the route the traffic takes back as easily. That might be stalled now due to the Verisign stuff.
Kelly Dorset
Ex-Plusnet Jobsbody