I've understood that sometimes Red-Blue LEDs (which I understand your maxisuns to be) cause some plants that appreciate stronger light intensity to form unusual foliage. It doesn't surprise me that the binata is doing great, it's a sundew that can tolerate lower intensities of light, but the capes could be another story.
Jeff Dallas told me that his Drosophyllum and some Drosera under red-blue LEDs would produce bizarre foliage, twisted and irregular, and speculated that plants appreciating higher light intensity dislike red/blue-only spectra. Perhaps putting the cape sundews under white LEDs would help? Red/Blue lights work excellent for neps, possibly because many of them are partial-shade-growing lianas.
In my experience, Red-Blue LEDs for drosera tends to irregularly cause weird foliage. I have red capensis under such lights in my setup but they are only just sprouting from root cuttings. I'll see if they produce weird foliage in the future.