It is, in womens class (up to Pre78) and 4 stroke (up to Pre75)
Qld titles had six Superseniors, fastest was on aPre65 500 which failed with a lap to go on last race when leading easily. Winner overall was on a Pre60 500, 2nd aPre78 400, 3rd a Pre75 250.
It's all about the rider, eg my lap time at last years Qld title between my Pre65 Twin Port CZ and Evo 250 Maico was about one second over a two km lap