Your issue is that you're misunderstanding the parent comment's claim. Izacus didn't claim that Windows laptop trackpads weren't bad -- the only claim made was that Apple trackpad drivers were worse. I've used a few friends' windows laptops, and while their trackpads certainly weren't good or perhaps even adequate (to borrow your term), they were without a doubt better than the Apple-laptop-running-windows combination, which I would classify as far below "adequate".