Heredoc in bash, sending to file through stdout vs redirection

Question

If i'm understanding some of these heredoc tutorials properly, you can redirect with a heredoc like this

Using Stdout of sudo -u

sudo -u someuser -c bash <<EOF
{
  foo
  bar
} >> /tmp/somefile.txt
EOF

and like this, redirecting stdin

sudo -u someuser -c cat <<EOF >/tmp/somefile.txt
foo
bar
EOF

Is there a benefit to one over the other? Am I understanding this correctly?