I meant more in terms of performance and UX than features. If Firefox OS delivers on displaying web apps really darn well, then more power to it, but the demo didn't really stand out in that way either. Most likely the poor hardware, but again, that's still part of the end user experience which is crucial imo. Ubuntu's mobile os seems to perform much more smoothly from the demos I've seen for example, but I'm not sure how the hardware compares to the sets that were used for these Firefox os demos.