When comparing Adobe Animate (formerly Flash Professional) vs Creature, the Slant community recommends Creature for most people. In the question“What are the best 2D animation tools for game development?” Creature is ranked 7th while Adobe Animate (formerly Flash Professional) is ranked 8th. The most important reason people chose Creature is:
One of Creature's strengths is its ability to assign motors on bones which will generate animations based on parameters set on the motors.
Ranked in these QuestionsQuestion Ranking
Pros

Pro Powerful tool
This program has developed AAA TV Series and Movies like Fosters Home for Imaginary Friends and My Little Pony: Friendship is Magic.
Pro Export to HTML5
Pro Interpolation between frames
Several ways to create animation and special effects: motion tweens, classic tweens.
Pro Create and organize layers
Layers help you organize the artwork in your document. You can draw and edit objects on one layer without affecting objects on another layer.
Pro Bone tool
Bone tool that enables you to link symbols together quickly and easily in a parent/child relationship commonly referred to as inverse kinematics.
Pro Easy to use
Pro Automated animation
One of Creature's strengths is its ability to assign motors on bones which will generate animations based on parameters set on the motors.
Pro Unity runtime always up to date
Among various game engine supported, Unity is the most up to date runtime including the most recent features, many samples, integrating well in the Unity editor.
Pro Easy to use
Creature has a simple workflow structured into 3 steps: Meshing, Rig and Animate.
Cons
Con No more support
Adobe ditched AIR which they will EOL at 2020

Con Exspensive
Flash can be priced at $999.99 on the official Abobe store.
