I think one could say that about ALL UV cured colour coats ... with the right home care routine and some care and attention attention they all last 2 weeks and sometimes 3. After 3 weeks they all look pretty awful with acres of regrowth showing. If applied properly, and barring client interference they should all last about the same.
Shellac is my choice and always has been my only choice for completely different reasons. A few things to think about:
1. Shellac is not gel and applies easier, faster and quicker than gel.
2. There is no buffing of the natural nails when you use Shellac
3. The coverage with shellac is always 2 coats and not 3 or more so time saved.
4. Shellac is free of the components in gel that are known to cause allergies.
5. Clients Ask for Shellac by name all the time. It is superbly well branded.
&. Shellac removes the fastest with also no buffing and clients love that.