Mmm. Yeah, probably. But you get a lot more antenna for the extra $6. You'll need a balun to go with an Antennacraft antenna - not supplied with it.
http://www.amazon.com/WINEGARD-TV-29.../dp/B0029U2XH2
Re your table, KUPT is the lowest power of those that you list, by 6 dB. This is a logarithmic scale, where each 3 dB is a doubling in power. Not really so mysterious.
And I'm not sure where you got different frequencies for 16.1 and 16.3. There's only a single bit stream for each real channel, as I understand it. The virtual channels are multiplexed in that single stream of bits.
http://en.wikipedia.org/wiki/Digital_television The broadcast frequency is the analog carrier for the digital stream. The tuner locks on to the carrier - either you get a lock and see TV, or you don't, typically.