The response in IntelliJ/Gatling is not equal to the response in Firefox Firebug

Gatling (Open-Source)
1

My simulation:

import scala.concurrent.duration._
import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.core.session.Expression

class SomeSimulation extends Simulation{

  val httpConf = http
    .baseURL("http://api.thing.no")
    .acceptHeader("text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
    .doNotTrackHeader("1")
    .acceptLanguageHeader("en-US,en;q=0.5")
    .acceptEncodingHeader("gzip, deflate")
    .userAgentHeader("Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Firefox/31.0")

  val scn = scenario("vr")

    .exec(http("base")
      .get("/"))
    .exec(http("ST")
      .get("/st/norge"))

  //setUp(scn.inject(constantUsersPerSec(10) during (10 seconds))).protocols(httpConf)
  setUp(scn.inject(atOnceUsers(1))).protocols(httpConf)

}

Produces this result in the console of IntelliJ when being executed (with full logging):