I presume you are asking about h2h - in which case the amount of lag that you experience in controlling your players relative to your opponent has two do with following factors:
- your/their relative distance from the nearest server (the closer you are the smoother your h2h gameplay will be)
- your/their relative network capability/traffic
- your/their relative EA server activity (because you may not both be on the same local EA server)
- Your/their relative device specs/quality (although this is not as big a factor as the three above)
I am almost always further from the nearest server than my opponent, so my lag is horrible … sometimes I get lucky and play a fellow Aussie, but it’s not much help if they are invariably closer to the server than me (South Australia is probably about as far away as you can get, other than maybe Tasmania)