The user experience once you have many tabs open in Chrome just completely falls apart. The tabs shrink so tiny you can hardly see them, and there's no way to reorganize them other than to one-by-one pull them out into a new window.
Safari, on the other hand, has Tab Exposé and also horizontally scrolls the tab bar once there are too many. It's such a simple thing that makes a huge difference.
You can shift click a range, or command click a disjoint set, of tabs in chrome. And then with one mouse drag move all of them to an existing window or create a new one. It's a feature that I wish safari had (although I have tried tab expose)
Safari, on the other hand, has Tab Exposé and also horizontally scrolls the tab bar once there are too many. It's such a simple thing that makes a huge difference.