Not only does it sound better, it is better.

Sign this petition if you want to make a change that matters. For so long we've had Wheat Thins, and wondered, "what would Wheat Thiccs be like?" If only we knew. But unfortunately, the obvious choice of Wheat Thiccs was shunted to the side when instead the name Wheat Thins Big was used.

Open your eyes Nabisco, people want WHEAT THICCS!