The color of both is clear and lightly lemon/lime, the aroma is quiet or tame without striking notes. However the finish is different:
Trefethen Oak Knoll Napa Valley Family Vineyard 2009 Chardonnay, $25.49-$34.99, 90 points, finishes with a lovely long and warm vanilla spiciness with hints of peaches and cream.
Greg Norman 2009 Cardonnay Eden Valley Australia, $12.74-$14.99, 89 points, finishes long with a hint of spearmint, menthol, and spice.
Both are nice Chardonnay wines, but QPR goes to the Aussie, unless a noticeably dry wine is not your cup of tea.