Lanchester’s Power [Linear and Square] Laws mean that combat in science fiction RPGs will usually be fundamentally different than combat in fantasy RPGs. Or the designer will have to somehow compensate, as in Star Wars.
Expected, but I don't think it will last long, and that has nothing to do with which system is better or more popular it is based on the volume of products published. Pathfinder puts out multiple things a month, D&D a few a year. So next quarter it will be Pathfinder back on top, unless WoTC has a surprise or two up their sleeves. Best of luck to both of them they make fine games.