Articulate is better for the support community alone - plus all of the free assets available - millions of vector and raster images, videos and premade slides... Adobe charges a lot for their stock images.

Plus the ability to use Articulate Rise and import Storyline elements... it's been a while since I've used Captivate so someone correct me if I'm wrong but Captivate / Adobe has nothing like Rise correct?

Rise is still somewhat basic but it's getting better every update and it's amazing for quick projects like Job aids or Promotional / LTO training.

IMO Storyline's TTS voices sound better and are more diverse - we don't use them a lot, but when we do it's nice to have the variety.

Additionally, Storyline cue points are a powerful tool Captivate didn't have when I worked with it.

Captivate and Dimension are examples of Adobe products that lag behind the market - I would love for Captivate to be the go-to choice for us as we use Premiere, AE and Illustrator for all of our graphical elements and video content so it would make sense to use their E-Learning authoring tool as well but Captivate simply isn't powerful enough in its current iteration.