Yes but if the data also shows that a more thorough background check before allowing a person to purchase a gun results in lower deaths, shouldn’t that be considered too?

Data adds to support your argument. It doesn’t make the argument. It’s too easy to cherry pick information as you’ve shown.

Out of curiosity, how is the argument to ban guns different from the argument to ban access to fetal abortion practices?

The ban on guns is heralded as the beginning of the end if passed, but abortions seem to be the same unless they’re explicitly banned.