FF is clearly superior technology compared to solar.
Some advantages of solar might be:
Access of technology for individuals. An individual most likely will not afford a FF reactor for some time.
Absolutely no fuel required. While FF requires minuscule amounts of fuel Boron, no-one can say what would the exact price for consumers, once the popularity of FF will rise to the sky. Especially once the world gets involved in the first global space war ;). Battleships anyone?
The price of solar panels, batteries, super-capacitors, superconducting (or HVDC) transmission lines is constantly falling because of manufacturing and design improvements. The price will fall even faster once fossil fuels are not the only source of energy.
It is possible that in the near future it will be cost-effective to print solar cells with your own printer at home. Now it is possible, but not so convenient or cost-effective. It will be a much longer time for someone to be able to print a fusion reactor at home.

Basically having advantages means that you can find non-competing uses for each of those technologies.