Digital wouldn't do well at all, even with the same power as analog, because digital doesn't work well in the VHF range at any power.
Those TV stations that relinquished their UHF digital channels and moved their digital signals to their original VHF channels when analog TV was discontinued a couple of years ago now regret it -- especially those in the low band. WPVI (ABC) in Philadelphia, for example, was allowed to quadruple its digital power on channel 6 within a few weeks of the analog turn-off because the FCC received so many complaints from viewers who couldn't get it over the air. Remember, channel 6 (82-88 mc) is just below the FM band. Even in the high band (chs. 7-13, 174-216 mc), digital is trouble prone, though not as much so as in the low band. But it seems to work reasonably well in the UHF band.
It would be madness for an FM station to use as much power for its digital signals as for its analog signal. The two digital signals are in the first adjacent channels, and at that level -- meaning half the analog signal power in a first-adjacent on each side -- reception of the analog signal would be significantly degraded on most conventional receivers, severely so on many of them.
Did you even read the linked blog post?
