Nothing can touch Photoshop. They pay developers good salaries to implemend new features. For people who do media prouction and photography for $150,000, they only care about time, nothing else. I will always tell them to use Mac or Windows and Photoshop to get work done in a hurry and get paid.
GIMP does not exist or is s laughing joke for people who work full time in graphic design and photo production.