What was stated above... however if you like synthetic benchmark results to help your comparison...
2010 MBP 17 (2.66Ghz,2.8Ghz)- Single Core- 2141, 2402. Multicore- 4174, 4643
2016 rMBP 13 (Base only 2.9Ghz)- Single Core- 3740. Multicore- 7377
2016 rMBP 15 (Base only 2.6Ghz)- Single Core- 3979. Multicore- 12117
There will be a vast difference in performance at full load assuming correlation between what the benchmark tests and what your workload actually is.
All synthetic results are from Mactracker which notes benchmarks utilizing Geekbench*.