Does this codes do the same?

is the following code:

<!-- BEGIN GADWP v5.3.7 Tag Manager - https://exactmetrics.com/ -->
<script>
  window.dataLayer = window.dataLayer || [];
  window.dataLayer.push({});
</script>

<script>
(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
	new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
	j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
	'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
	})(window,document,'script','dataLayer','UA-12345678-9');
</script>
<!-- END GADWP Tag Manager -->

the same of having the code google suggests?:

<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-12345678-9"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'UA-12345678-9');
</script>

Thank you.