What's the business model?
Why do you focus exclusively on matlab as your competitor posterchild?
I feel like you should be saying Matlab / Octave wherever possible; especially since your target audience is far more likely to be the one that wants a "faster Octave" rather than a "cheaper Matlab".
PS: Don't trust github language stats; half of that code is octave specific, but still gets labelled as Matlab.
Coming from Octave, you'll notice significant speedup advantages, you can see some of our benchmarks with it here https://runmat.org/blog/introducing-runmat
Last month, we put out 250+ built-in functions and Accelerate, which fuses operations and routes between CPU/GPU without any extra code/memory management, i.e. no GPUarray.
We're still flushing out the plotting function, but we'll have updates to share around that and a browser version very soon.