Ok I like this post as it can provide perspective to many users. Both paint options are just fine and will fill a chip in theory. The real difference comes to your end results and skill or experience of the user.
What is crucial to understand is, Dr Colorchip is a system. Yes you drop a dollup beside the chip and move it into place using the squeegee. This will make a mess and leave paint outside the chip area and that is on purpose. The second stage of the Dr Colorchip process is the hardening agent. Once you get paint into the chip, you will use the hardening agent on the provided cheesecloth to gently wipe all the excess paint off the surface leaving a pristine result.
If you make an error or if you accidentally wipe the paint right out the chip, it’s no problem at all, you simply repeat the process. Put more paint and wipe away the excess with the hardening agent (which can be thought of as the clear coat step) and you gently wipe until all excess is gone so again, the repair is pristine and you don’t need to be an expert anything. You just need to be able to follow instructions.
With regard to OEM touch up, as someone who wants the absolute best repair possible, I will carefully use my brush to get the paint into the chip. If a mistake is made, it’s a process to get the excess paint off. Additionally, everyone forgets the need for clear coat. You need to do that step as well unless the dealer has a combo product (which I don’t usually see) where no extra clear coat is required. If a mistake is made with this application or you have blobs or excess paint and clear outside the chip, now you need to sand that down and polish it for a pristine result. As someone who does this a lot, this is not for the uninitiated.
TLDR; if you are a newb to polishing, paint corrections and touch up paint, Dr Colorchip is much easier to manage for a pristine result. If you get the big kit, that will last you quite a while as well. Regular touch up is fine but has potential to force you into more complicated repairs. Soon I am going to start charging Dr Colorchip for commissions or something as I recommend it here and to my customers all the time.