When comparing Defold vs Esenthel, the Slant community recommends Esenthel for most people. In the question“What are the best 3D game engines for Android?” Esenthel is ranked 6th while Defold is ranked 9th. The most important reason people chose Esenthel is:
Esenthel has a built-in code editor which drastically simplifies the programming process. Programming with Esenthel is based on C++, however, when using the code editor there's no need to make separate .cpp or .h files. Code can be written once and the editor will be separating definitions and declarations automatically in the background allowing for quicker development.
Specs
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Pros
Pro Easy to learn
Defold uses Lua, which is regarded as an easy to learn language by most.
Pro Completely free of charge
Software and online dashboard are free of charge.
Pro Good combination of visual editing + code (Lua)
You can do a lot with drag and drop, but you're not limited -- the code (Lua, which is easy to learn) allows you more power than just visual editing usually gives you.
Pro Fast results
Going from idea to result is very important for the creative process.
Pro Visual editor
Pro Very performant
Being crossplatform it is important to work on low end devices.
Pro Easy and fast export for various platforms
Pro Great community
A very active and friendly community in forums.
Pro Source code available
You can download and modify the source code of the Editor and the engine for free.
Pro Collaborative
You can invite friends from the dashboard and create games together.
Pro Hot reload
It allows you to change scripts in a game while it is running live. Common use-cases is to tweak gameplay parameters or to perform debugging on a running game.
Pro Quicker development by using the integrated code editor
Esenthel has a built-in code editor which drastically simplifies the programming process.
Programming with Esenthel is based on C++, however, when using the code editor there's no need to make separate .cpp or .h files. Code can be written once and the editor will be separating definitions and declarations automatically in the background allowing for quicker development.

Pro Can be easily extended
Built in pure C++ so it is easy to use and extend however needed.

Pro Available on Steam
Pro Can be used for collaborative development
Esenthel comes with tools allowing for multiple developers to work on one project at the same time in collaborative mode. Every change made is instantly visible by other team members.
Pro Engine issues are resolved quickly
The author is very device minded and able to handle any problem quickly and effectively and he has a good track record of listening to requests.

Pro Access to full source code
Having easy access to the full source makes it possible for any skilled developer to add features that a project requires.
Pro Attractive licensing
Free to try, with license as cheap as 9.50$/month (with yearly subscription), 11.40$/month (monthly subscription) or full source code license 228$/year.
Pro Incredibly stable
The engine is rock solid and stable which, considering its extensive feature set, is a huge plus for game developers
Pro Helpful and responsive forum
Pro Good support for Android and iOS
Android and iOS support is pretty stable and easy to develop on. It's possible to, for example, develop the entire game on Windows or Mac and then easily compile for Android and iOS.
Pro Can import a wide variety of formats
- 3D - FBX, DAE, OBJ, 3DS, B3D, MS3D, BVH, ASE, PSK/PSA
- 2D - BMP, PNG, JPG, TGA, DDS, TIF, WEBP, PSD, ICO
- Videos - VP9, Theora
- Sounds - OGG, WAV, MP3 (once decoding patents expire)

Pro Constant development and progress
New features or update to features are provided monthly.
Pro Supports in-app purchases
IAP support for both mobile and desktop devices.
Pro Supports multiple compression libraries
LZMA, LZHAM, LZ4, ZLIB, Snappy, RLE

Pro Oculus Rift native support
Oculus Rift API integrated into the engine platform.
Pro Supports modern graphics and sound APIs
- Graphics - DirectX 9/10/11, OpenGL, OpenGL ES, WebGL
- Sound - DirectSound, OpenAL, OpenSL

Pro Rock solid
Cons

Con Lack of in-depth tutorials
There are plenty of beginner coding tutorials which serve as a basic introduction for a new user to get up to speed, but once having passed that stage there is a real lack of free more advanced tutorials/examples/code snippets demonstrating the finer details of the vast and varied API functions.

Con One-man developer
Although the complete engine is maintained by a single, highly-skilled individual, he can be limited to what he is able to see or perceive, and sometimes he doesn't recognize broken or incomplete features until he sees it firsthand and sometimes doesn't recognize valid reports from his users. But when he does recognize the gap in the engine's feature-set, he is quick to make adjustments and updates.

Con Slow roadmap implementation
Bugs are fixed promptly, but the developer maintains a growing 'roadmap' of features with no indication to users of time frame and priority of feature implementation.
Con Lack of editing tools
Con Web support practically non-existing
Web support exists only on paper. The way it works is that Emscripten is used to convert an entire project to unreadable Javascript. That practically only works for very simple demos, no real-world projects.
Con Expensive
