I don't think the issue is related to the engine, but more to the developer.
For sure you can make it one with Construct 2 and I bet even with any other engine. Many RPGs have been created with simple technology, the first around 40 years ago.
What was the issue you have found? Because you might find it with Construct too and discover only at the end that it isn't the engine problem...
If you want to make an RPG with Construct I have done a series of tutorial where you can learn the basic and improve at each video.
The first series is for an 8-bit shooter (yes, not an RPG, but you have to learn the basics first), then the second is about tilemap and how to use them and the current one that will end in a couple of weeks is for a card game with battle grid, where you can get really many mechanics you can use in a RPG game too.
Here is the link to the first video if you want to give it a go: