So which is the cool one and which is the practical one?
They are both 0.16" thickness at the spine... either knife will be fine for EDC tasks. Get whichever one you like the looks of better. Neither of them are excellent cutters when compared to say a Spyderco Delica or Benchmade Bugout.
You can do what I do and carry a ZT and a GEC slipjoint. Best of both worlds, and you get to buy two knives instead of one!
When specifically comparing the 0562 and 0452, the 0562 will be a bit beefier due to its external stop pin ("thumb studs") design which provides lateral support during prying (not that it's recommended). The tradeoff is weight at (about) 5.5oz. The 0452 has an internal stop pin design, so it's not as good with the more abusive tasks. However, the 0452 is thinner and easier to carry at 4.4oz. Do you like off-road trucks or performance SUV's? Cuz neither are sports cars at .16", lol.