No, just how they route the packets and which links they choose to use.
Though again, the reality is, they don't have the choice to make.... There is a very limited number of back-bone carriers, and even less trans-oceanic cable companies... And routing issues on the back-bone starts to get very complex, with the routes being dynamic, and constantly changing due to network loads and data priority (with broadcast video and telephone calls getting higher priority then Internet 'data')
For European connections issues will usually develop once the packet leaves the trans-oceanic connection and enters the european back-bone networks, (which are a lot more fragmented when compared to the US back-bone carries.) From what I understand, there is no Pan-Euro equivalent to the US commercial carriers, nor is there a Pan-Euro government equivalent to the US National Science Foundation for the creation of new high-speed back-bone development.... (In the US, NSF was responsible for the 'orginal' back-bone for the Internet before it went commercial, and currently operated a proto-type ultra-high speed back-bone for IPv6 implementation...)