Fair enough. If it's a 20A circuit with one outlet then a 20A recept. makes sense, and if the NEC says 20A laundry circuit then 20A it is. But I wonder why they specify a cct. that will take up to 2400W for a load that at most will be much less than that, even if you take the 120% rule into account.

Actually, does the NEC consider a washer a continuous load for cct. rating?