It is well suited for small objects in home/office or familiar surroundings to anchor Augmented Reality Objects. It works well for most e-commerce use cases, travel use cases, games, etc. It is not well suited where depth occlusion is the primary use case or human body anchoring is required or even for large-scale AR use cases.
Spark AR Studio is used to create AR experiences for the Brand Partners. The AR experience is created so interactive that the user is attracted to use the filter many times
Vuforia Engine has limited functionalities compared to ARCore. It has image-based detection and augmentation which requires users to have the anchor image with them for the augmentation to properly occur. ARCore solves that and it's one step less to reach the user and really convince them to try it.
I have used Spark AR Studio for the first time to create AR experiences and it deeply satisfies me. I have never used other software similar to this. It is most simple and creative software which I have ever found till now.