Pro tier racing

How big is the difference with rookie tier ?

Nothing really.

oh 

hrmm... i dont know about that... hehehe Only my 2nd season and yes first season i made alot of mistake trying to find my feet but after i got some great advice i was making progress.. Point being :) i won the last few races in rookie moved to Pro and now Im dead last and pointless after 2 races so it can be hard. i supose it depends on how close people are to the lvl cap and what level they are on as well.. ?? (still working that one out) But thats my 2 cents worth.

It just depends on the people - on average you'd say you'd find better managers in the Pro tier, but it's not a garantee. They could be inactive managers as well, or just unskilled ones.