As was mentioned, VHF channels typically carry farther than UHF channels, so at a distance (Bedford, or Lafayette, for 2 examples), I expect 9 to be viewable more of the time than the UHF stations, with -equivalent- power.
In the analog world, for instance, a UHF with 5 million watts should get out at least 50 miles. But a VHF 7-13 might get 55 miles with 316 thousand watts.
There are of course, about a zillion variables including transmit and receive antenna designs, terrain, co- or adjacent-channel interference, etc. etc. etc.