There are a couple of soft counters to the Phantom, too. Wampa, for example. It's not massively likely he'll get a free shot that rolls right into a crit on Whisper, but it definitely can happen, and it often makes the Whisper player nervous enough to either concentrate fire on the poor little TIE, or avoid him for a turn or two. If Palp is also on the table, it really amps that effect up.
It's no hard counter, but it's certainly something.
