No, Anderson is not cheating. You think that after all the success he has had in the past three years he hasn't been torn down a few times each year?
He has Jason Line running the engine program. Jason worked for Joe Gibbs racing when B LaBonte won the Cup in 2000. He is the main reason Anderson (who is in 2nd place currently) is running so strong. Line knows his way around an engine and dyno.
BTW, Line is currently 1st in points. No coincidence.
Pro Stock is in my opinion the best professional drag racing there is.
Paul