Product name as h1 or h2 (SEO)

I've just changed the 'product' / 'show' view so that the product name is now in h1 tags.

Would this not be better for SEO?

I'm just wondering why this wasn't set as default? Is it just incase there were other h1 tags present in the template? Or is there something I haven't thought about?

---

<h1>
<span id="hikashop_product_name_main" class="hikashop_product_name_main">
<?php
echo $this->element->product_name;
?>
</span>
<span id="hikashop_product_code_main" class="hikashop_product_code_main">
<?php
echo $this->element->product_code;
?>
</span>
</h1>