Not your typical track day rules there then!
Any track day I've been on, You'd be flagged straight away.
That looked familiar in that the Audi (A3 especially) was pulling away on the straights and then the Abarth closing up through the bends.
I had a Humdinger with a Golf GTI Mk6, his 207bhp showed on the straights but I'd close up on the twisty's.