a little clear up, later will post videos:
WTCC isn't NASCAR, so cars aren't the same, some are bit faster, others are better in crners
after long tests we found 5 comparable cars:
N-group cars:
Emperor - heavy acceleration, but fast on straight and corners (Japan)
Intruder - comparable with Vincent or Primo (Japan)
Primo - comparable with Intruder and Vincent (Japan)
Sentinel - the fastest, but speed is usefull on long straights only (Germany)
Vincent - comparable with Intruder and Primo (Germany)
JTCC:
Blista Compact
Elegy
Flash
Jester
Sultan
Super GT
V8 Supercars Australia/modern WTCC kind of
Premier
Point is to find as many diffrent, but comparable cars, putting Sultan, will make it sultan race, instead touring cars race.