How can one get a real world comparisons of how a given engine compares to other engines of the same size? We know that manufacturer numbers are almost useless.
I bought my first 4S engine a few months ago. Its an ASP 65. I did a search on this engine and as usual some say its a strong engine and others say its not. Ive run almost a gallon of fuel through it and its able to turn an APC 12-6 at 10300 rpm steadily with a lot of smoke coming out. I can get it to about 10600 with less smoke but it will not maintain this RPM. But I don't know if this is good for this sized engine or not. Where can I find practical numbers for given engine sizes and props to compare?

Thanks,
~Jay