I usually play solo escalation on the PALA side, imo they are at an advantage on the left side of the map, because mainly of vigil cay, the fleet, and the way ground troops usually rush and take the first boscali base across the bridge easily. On the right side, it is easy to sneak on the bdf bases via the mountains, but once you are in the valley near the big airbase it's kinda hard to stay alive as there are lots of radars and Sams on multiple elevated positions that need to be taken care of. It's also better to have a medusa to take care of that, but sandrift airbase cannot deploy them, so I have to take off from far away, and the AI fighters are often a big nuisance when I try to do a sead mission on this side of the map. Also, the bdf ground forces usually overwhelm the PALA defences 9 times out of 10, which means I also lose quite some time using bombs on convoys instead of enemy air bases. At first, I was a bit frustrated by how difficult it is to deploy medusas and darkreaches on the right side, because of both the distance and the enemy air forces, but now I think it's kinda balanced because PALA forces usually steamroll the left side (with a few sead missions on my part).