Nothing wrong with that, however, I was referring to 1) the fact that AppleCare will increase the cost by $300 or so over a similarly-specced (and warrantied) Dell, and 2) laptops that have modular parts (RAM, SSD, keyboard especially) and are assembled with screws rather than glue and rivets are easier and cheaper to repair. If you get a laptop with soldered RAM and SSD, you'll have the same issues as the Apple if/when something goes wrong.
Both the Precision 5530 and MacBook Pro 15" I priced out had the standard warranty. Upping to 3 years of AppleCare+ for the Apple is $379 and upgrading the Dell to 3 year Pro Support with Next Business Day warranty ($239.64) plus 3 years of Accidental Damage ($118.08) and an additional 2 years of Extended Battery Service ($69.17) costs a total of $426.89 so including the same extended warranties for both wouldn't have changed the price comparison too much. Dell's accidental damage is better since you don't have to pay the service fee for it like you do with Apple.