caches cleared in the wrong order?

cache_clear_all() contains the following code:

  if (!isset($cid) && !isset($table)) {
    cache_clear_all(NULL, 'cache_page');
    cache_clear_all(NULL, 'cache_block');
    return;
  }

Am I right in thinking that the block cache should be cleared before the page cache? So that if an anonymous user happens to hit a page in between the two calls, they don't end up putting the old blocks back into the page cache.