Is there a relevant difference between these capacitors?
Being a switching supply, the effective resistance (ESR) is important. The FC series is a low ESR type, so you'll want something with similar or lower ESR. (although with some circuits, if you go too low on the ESR it can become unstable, too).

Normal (high ESR) cheap capacitors will lose efficiency, may not work at all, and have shorter life.
It's more important on the output capacitors, but is important at the input as well.

You will notice some of the more modern, high frequency switchers use more ceramic capacitors, as they have a very low ESR. Sometimes they will parallel both types, to try  and get the best of both worlds.

Tolerance isn't really important here. Voltage rating should be higher than the input you plan to use (so if you intend to use, say, 24V input, you'd want 35V cap for safety margin).
Life at temperature is important as well, if it will be in a higher temperature environment.

If you want to have something similar from panasonic, try the FK series. It is miniaturized, and somewhat reduced ESR relative of FC.

EEEFK1E101P is 8mm dia and 6.2mm height, otherwise similar capacitor.